Motorbike overview: everything you wanted to know and more

Motorcycle, motorbike, bike, moped, scooter, cruiser, chopper, bobber, scrambler, ride… we could go on, there are literally tons of types and terms for motorcycles and they’re so much more than just a means of transport these days.

Their dual (yet contrasting) characteristics of freedom and danger have always given them a ‘bad boy’ image, a machine that’s not for the faint-hearted, with connotations of speed and danger but there’s a much deeper meaning, a biking sub-culture that traces its roots back to the post-war period in the US and Europe.

We’re taking a look at the origins of the motorcycle, what exactly it is, how it all began and the different types and styles of motorbike that there are. We’ll look at what makes them different, and the various characteristics of the different motorbikes that are available to you.

So, if Wikipedia’s explanation of the motorcycle isn’t floating your boat and you’re after something a little more visually appealing then we hope we’ve cracked it; and after you’ve read this you’ll get yourself onto two wheels and realise how incredible motorcycles really are.

An overview of the motorbike 

In many ways, a motorbike is the simplest form of motorised personal transport. At its most basic, it’ss imply some sort of engine, two wheels, steering, a brake (hopefully) and somewhere to sit. And in the very early days, that was what you got.

Sharing engineering with the bicycles of the time, the earliest bikes used small internal combustion engines that replaced the human-powered pedals.

They were basic, but quickly ramped up in performance and sophistication, as advances in motor car design made engines more powerful and reliable.

We’re a long way from the post-war world of course, and the range of motorcycles on the road today is enormous.

We’re currently witnessing an increase in the popularity of the naked bike (or roadster) aided by the new-wave custom scene.

Meanwhile, the adventure bike sector has been growing year on year for the past two decades, after supplanting the sports bikes as top dog in the market. But no matter what type of bike you choose, riding is still all about individuality, excitement and a passion for two wheels.

Birdseye view of a motorcycle

The motorbike

History of the motorbike 

Back when only the wealthiest could afford cars, motorcycles were attainable for the man in the street.

Factory workers, who only a few years earlier had been fighting a war, could now buy their own personal transport, opening up a whole new vista of travel – with speed, acceleration and excitement approaching that of the fighter planes which has been battling in the skies not so long ago.

Once they’d settled down with a family, simply bolting a sidecar allowed the spouse and kids to come along on country jaunts and holidays too!

Fast-forward through the rest of the 20th century and you can see how motorcycles really took off.

Manufacturing and engineering processes that had been finessed by wartime were applied to the car and bike industries, and the British bike industry in particular underwent amazing levels of growth.

Firms like Norton, BSA, Triumph and Royal Enfield catered to a growing market that wanted personal transportation, but couldn’t quite afford a car

BSA S31

BSA S31 Sloper (1931)

The next great wave arrived in the 1970s, when the Japanese motorcycle industry took over. The industrial revival in Japan extended to cars, electronics, cameras and motorbikes – and advanced manufacturing techniques meant great performance and quality, at affordable prices.

Honda, Yamaha, Kawasaki, and Suzuki overtook the British firms, and while European firms like BMW and Ducati did their best, Japan ruled the two-wheeled world all through the latter part of the century.

Since the millennium, Europeans have hit back, and KTM, Triumph and Aprilia and others have joined BMW and Yamaha to show Japan the way forward in several important sectors.

Less than 150 years since the first two-wheelers were invented, the modern motorcycle is a fantastically well-developed machine.

Engines are powerful, efficient and reliable, chassis and tyre technology gives racetrack-level grip and handling, and clever electronics have added layers of safety, preventing accidents. Of course, they still have those two wheels and an engine, but the brakes are much, much better and the seats are comfier than ever…

What are motorbikes made of? 

Motorbikes need to be fairly light, strong, and able to deal with the elements. So they’re made out of a variety of tough, resilient materials. They’re generally not super-expensive though, so there’s a limit on how exotic these materials will be.

Almost all bike chassis parts are made of aluminium or steel. The main frame uses cast or extruded aluminium sections, or steel tubes, welded together.

The front wheel needs to steer, so is mounted on a rotating steering head, using steel and aluminium forks, which also contain the suspension components.

The rear wheel doesn’t steer, so is held rigidly in a swinging arm that moves up and down, with one or two shock absorbers to soak up the bumps. Those wheels are made of a light alloy, usually aluminium, either cast or forged. Some high-end machines use magnesium for even lower weight.

Rear wheel chain of a motorbike

Rear wheel chain of a motorbike

Motorcycle engines use aluminium for the outer casing, crankcases, cylinders and head, with steel crankshafts and con-rods, aluminium pistons and stainless steel or titanium valves. Camshafts are steel; the clutch is aluminium and the gearbox uses high-strength steel.

Motorcycle bodywork is generally plastic, with fairing panels made from high-strength polymers, usually ABS (acrylonitrile butadiene styrene). Windscreens are made from clear acrylic (PMMA) or polycarbonate plastics, are as headlights and other lighting parts.

What are the different types of motorbike? 

  1. Adventure
  2. Bobber
  3. Brat style
  4. Cafe Racer
  5. Chopper
  6. Classic
  7. Cruiser
  8. Custom
  9. Electric
  10. Enduro
  11. Flat Track
  12. Maxi Scooter
  13. Modern Classic
  14. Moped
  15. Motocross
  16. Naked
  17. Scooter
  18. Scrambler
  19. Sidecar
  20. Sports
  21. Sports Tourer
  22. Streetfighter
  23. Super Sport
  24. Three Wheeler/Trike
  25. Touring
  26. 125cc

Why choose a motorbike?

There’s a multitude of reasons to pick motorcycling, but they can split into, essentially, practical and non-practical reasons.

The former is easier to understand of course: motorcycles make a lot of sense in towns and cities, where thy can squeeze though traffic far better than a car.

They’re cheaper than a car at the most basic level, both to buy initially, and in terms of maintenance and running costs. They’re easier to park, needing a fraction of the space a car takes up and lot more efficient all round!

Group of bikers

Motorcycling brings people together…

The non-practical reasons for motorcycling are more complex. A major factor is fun: the experience of riding a motorcycle is far more dynamic and involving than driving your average car.

The rider’s body is part of the vehicle, and body movements affect how the bike moves: weight transfer affects steering, braking and acceleration. Unlike driving, you’re not simply operating a machine here; you’re an actual, integral, part of it.

Take that a step further, and ride a bike on track, or on curvy country roads, and it’s a supremely satisfying experience, leaning through bends, bracing yourself against braking forces, and feeling the acceleration down the straights.

Finally, riding a motorbike is cool. It’s a step away from the norms of life – it is a dangerous thing of course, and that itself marks it out as a striking choice for many.

Why is a motorbike better than a car? 

Motorbikes beat cars hands-down when it comes to urban use and traffic-busting. Their smaller size and nimble handling lets them squeeze through the busiest traffic, and for commuting through towns and cities, they’re faster and more efficient than anything else – unless you have a helipad at your office…

Bikes are also generally cheaper than cars, and having lower running costs. Finally, they can offer much higher performance than cars, especially in sportsbike form. The instant acceleration available from a modern, full-bore superbike is incredible, and very few vehicles can match it.

Why is a motorbike dangerous? 

We’re not going to pretend otherwise: riding a motorcycle can be dangerous. Motorcyclists, unfortunately, are one of the most vulnerable road users and account for the largest proportion of road crash admissions to A&E in the UK. That’s because we’re not only vulnerable when a crash does happen, but we’re also susceptible to so many types of accidents.

Cars pull out of junctions without seeing bikes, taxis do U-turns across wide roads, buses and lorries cut corners, swiping unseen bikers off in traffic. And bikes are inherently unstable: having only two wheels means it doesn’t take much to fall off – wet roads, spilled diesel, gravel-strewn junctions, they can all have us off in an instant.

Momentary lapses in concentration have more serious consequences too – entering a corner too fast can end up with your bike in a ditch, where a car could maybe keep going with one wheel on the grass verge.

The consequences when you do have a bike crash are also more serious. You don’t have anything to like the protection a car can offer: there are no seat belts, air bags, bumpers or impact zones surrounding you.

If someone hits you on your bike, they hit you too. But there are plenty of ways you can make yourself safer on the road.

Motorcycle protective gear

Firstly is protective riding gear, to mitigate the consequences of a crash for your body.

You might have seen the term ‘AGATT’ in relation to motorcycle kit. It stands for ‘All Gear, All The Time’, and is a school of thought that says you should wear full riding kit any time you ride. Although it’s not all required by law, but one particular element is – a helmet!

The law says you have to wear a helmet that’s been approved by ECE 22-05 or equivalent safety standards, and that’s the bare legal minimum you have to wear.

pink motorcycle helmet

Helmets are compulsory by law for UK riders. Credit: Unsplash

You can go much further though…

You can protect the main parts of your body and limbs by wearing various types of protective clothing, either made from leather, or though artificial materials, which will save your skin from catastrophic abrasion while sliding along the road.

Under the strong, abrasion-proof outer layer, you want impact-absorbing armour in place to reduce the damage caused by hitting other vehicles, kerbs, street signs, lamp posts or other roadside furniture.

More recently, riding kit manufacturers like Alpinestars and Dainese have started fitting advanced airbag technology to their jackets and suits.

These sense when a crash is happening, and inflate the protective gas-filled cushion inside the clothing in a fraction of a second; these can prevent serious skeletal and other internal injuries.

Your hands and feet are particularly to injuries in a crash, so these need more specialist protection.

Motorcycle boots use extremely tough impact absorbing structures and abrasion-proof outer shells, and often extend protection up around the ankle and lower leg.

Gloves use exotic material to prevent abrasion to your hands and fingers, impact-absorbing sections around the wrist bones, and super-secure fastenings to keep them on your hands in a spill.

Bike safety

Another part of the safety equation is your bike. At its most basic level, you should ensure that the brakes, tyres and suspension are in great condition, so you have the grip, braking and handling to prevent crashes in the first place.

Old, worn tyres are a sure-fire recipe for falling off in poor riding conditions.

Next, most bikes nowadays have anti-lock brakes (ABS) – indeed, it’s been a legal requirement for a few years now on all new machines.

If you’re riding an older bike without ABS, consider upgrading to a newer model that has it. On the road, locking the front wheel in particular will almost always lead to a spill.

Traction control is another solution that’s well worth considering. Like ABS, a small computerised ECU on the bike analyses wheel movements, and if it thinks you’re losing traction at the back tyre, it will step in and cut the power saving a crash.

Early systems were quite basic, but the very latest bikes have excellent traction control setups which work perfectly almost all the time.

There are also so-called passive safety systems on your bike which can help prevent collisions. Always-on headlights are an obvious example: car drivers will often see your headlights before they see you!

Use your biking knowledge

Finally, the best safety system is the one between your ears. Your brain is a fantastic rider aid, and with training and practice, you can make it even better. Never stop learning – the beauty of motorcycling is you’re never as good as you could be.

Keep practicing, keep learning. Attend as many courses as you can to keep your riding skills fresh, up to date and as good as they can be.

Whether its safety courses such as BikeSafe run by the police, or FireBike run by the fire service, all the way to advanced courses such as the Enhanced Riders Scheme (ERS), keep on learning and improving. You know it makes sense!

Motorbike speeds

Motorcycles generally have very high engine power outputs for their weight. The fact they don’t have a full enclosure for the rider and passenger (like a car) means they’re much smaller and lighter.

At the same time, they generally use low-torque, high-revving engine designs, which can make a lot of peak horsepower.

That gives them excellent acceleration performance – most middleweight and big-bore bikes will out-accelerate all but the most expensive super cars on the road.

The 0-60 acceleration figures for even modest sports bikes is often less than three seconds.

But motorcycles aren’t very aerodynamic.

Having a rider sat out in the breeze, with exposed wheels, engine, and messy airflow around the back end makes for a high level of drag compared with a smooth, slick car design.

This doesn’t matter so much at speeds below 60mph, but above this, drag starts  to become much more important. The force exerted by drag increased as the square of your velocity, so to double your speed takes four times as much power.

The overall drag encountered by a vehicle is a function of its frontal area, and the so-called drag co-efficient (a measure of how ‘slippery’ the vehicle is).

Compared with most cards, motorbikes have a very bad drag co-efficient, but also have a small frontal area. This means they still perform quite well at higher speeds, despite being inefficient at moving through air.

Credit: Unsplash

Even very powerful motorcycles start to struggle to overcome air resistance as speeds approach 200mph.

The fastest bikes are the so-called hyersports machines, like the Suzuki GSX1300R Hayabusa, Honda CBR1100XX Super Blackbird, Kawasaki ZZR1400 and ZZ-R1200, and BMW K1300S.

These all have very powerful engines, making almost 200hbp, but they also have quite good aerodynamic performance.

That means extensive, smooth fairings that try to envelop the rider in clean airflow, with big mudguards over the front wheel and large tail units to try and re-attach airflow behind the bike.

The hypersports bikes reached a peak in 1999 with the Suzuki Hayabusa which would touch almost 200mph in the right condition. But the manufacturers feared statutory intervention by governments worldwide, so they agreed between themselves to limit future bikes to 300 kilometres per hour, or 186mph.

So while loads of new bikes have more power than the 1999 Hayabusa, they have electronic speed limiters that cut power above 186mph.

What does each motorbike look like?

If you’re trying to get your head around all of the different motorcycles out there, we’ve created one of the most helpful visual guides to bike types with pictures, in the history of the world.

Check them all out below and soak up the motorcycle goodness…

Adventure 

Of course, you can argue that every bike is an adventure bike because you can pretty much have an adventure on any two-wheeler, in any environment. But the generally accepted definition of ‘adventure’ usually involves riding off the beaten track to places you’ve never been before.

Swapping the daily grind for a bit of magic, whether that’s riding down the length of the Americas, hitting the Arctic Circle, schlepping across the Himalayas or heading for Siberia from central Europe.

Long travel suspension with good ground clearance is a given to soak up bumps and potholes, while a large front wheel will help get over logs, rocks and up onto river banks.

A 19-inch or 21-inch front rim can take on tough obstacles far more easily than a road-biased 17-inch wheel.

Tyres with a more off-road bias will give better grip on dirt, gravel or sand, their knobbly treads cutting into loose surfaces and mud, while wire-spoked wheels are better at absorbing shocks without damage, and are easily repaired.

BMW R1250 GS

Adventure bike: BMW R1250 GS

Engine wise for an adventure bike isn’t really specific, you can get bikes with almost every type of motor, from single cylinders up through various twins and triple to inline and V-engined fours.

The main engine characteristics needed when riding off-road are good low-down running and strong midrange grunt, but most modern adventure generally add a healthy dose of top-end power as well.

The same applies to brakes on adventure bikes, the basic requirements aren’t high but you’re never going to be fast enough on proper off-road rides to need a lot of stopping power. Similarly, new machines boast massive braking performance stats.

Examples of Adventure Motorcycles: BMW R1250 GS, Honda Africa Twin, Suzuki V-Strom, KTM Super Adventure

Bobber 

The term ‘bobber’ is an old one, and comes from the United States. The ‘bob’ in bobber comes from a ‘cut’ or ‘trim’, like a bob-tail animal or a bob haircut. And in the bike world, it’s the back end of the big old American cruiser which has been trimmed down, or ‘bobbed’.

The front mudguard, rear fender, brackets, luggage, bodywork – all the excess is cut away, to leave a light, more nimble machine.

Triumph Bonneville Bobber

Triumph Bonneville Bobber

Nowadays, a bobber can be a brand-new standard model, designed on the base of a retro machine and comes from the factory with the bobbed style.

Triumph’s Bonneville Bobber is one of its most successful models in recent years, selling by the truckload to fans of its simple styling and easy performance. Other models like Yamaha’s XV950 are less popular, but the essence of a bobber is customisation, so arguably you should really make your own.

Examples of Bobber Motorcycles: Triumph Bonneville Bobber, Yamaha XV950

Brat

You’ll probably have to be fairly deep in the custom bike scene to want a ‘brat’ bike and it’s maybe a less clear-cut definition than some others.

There’s a look not unlike a ‘bobber’, with upright bars, no front mudguard, and wide, high-profile front tyre.

CCM Spitfire Brat

CCM Spitfire Brat

Examples of Brat motorcycles: CCM Spitfire Brat

Cafe racer

The ‘cafe’ in cafe racer means the roadside coffee shops, truck stops and transport cafes of the 1950s and 60s. Bikes would meet up at these, and part of the entertainment would be timed dashes up the local bypass or similar route.

Back then, a cafe racer was generally based on a standard British motorcycle, but with an uprated engine and suspension, lower clip-on handlebars and maybe a rakish little flyscreen.

It was far from a race-replica supersport upgrade, more like a healthy road tune, with firmer shocks, maybe a high-compression piston and carefully-serviced four-leading-shoe drum brakes.

Kawasaki Z900

Kawasaki Z900 cafe racer

Currently, you can take your pick from factory-built cafe racers, or roll your own from whatever base you fancy.

The essentials are a reasonably-powerful engine, minimalist fairing, good-quality suspension and brakes, and premium styling. In the ready-made corner is the likes of Kawasaki’s Z900RS Cafe, Husqvarna’s Vitpilen 401 or 701, Ducati’s Scrambler Cafe Racer, and any one of the several Triumphs including the Street Twin, Streep Cup or Speed Triple.

Examples of Cafe Racer Motorcycles: Kawasaki Z900RS Cafe, Husqvarna Vitpilen 401/701, Ducati Scrambler Cafe Racer, Triumph Street Twin/ Street Cup/ Speed Triple

Chopper 

It’s the archetypal custom, from the American scene, and is perhaps best epitomised by the bikes from the Easy Rider move.

Peter Fonda’s bike from the film – called Captain America – is an extreme variant, but shows what counts: a super-long front fork, kicked way out, skinny front tyre and looping ‘apehanger’ handlebars.

There’s no rear suspension, rather it uses a ‘hardtail’ chassis, and no front brake either… The powerplant is a Harley-Davidson V-Twin, and while choppers can use just about any big-bore motor, an American V-Twin is the standard choice.

Harley Davidson Low Rider 2020

Chopper: Harley Davidson Low Rider 2020

Harley-Davidson can still provide a mild chopper-style machine in ready-made form – something like the current Breakout model or Low Rider Softail models look good and work well. But for a really extreme dose of chopper style then you need to build your own!

Examples of Chopper Motorcycles: Harley-Davidson Breakout, Harley-Davidson Low Rider Softail

Classic/modern classic

Essentially, a classic bike is one that is over 20 years old, though there are no hard and fast rules.

Most insurance companies start to offer reductions and special deals on policies for bikes around this age, reflecting the likelihood that owners will be more careful with a cherished machine. So a classic bike can be anything from a £100k+ pre-war Brough Superior to a battered £500 1999 Yamaha Fazer 600.

In general, most people make a distinction between pre-1970s machinery from Britain and Europe, and the later type of ‘modern classic’, generally Japanese, made between 1970 and 1999.

Norton Commando 750

Classic Norton Commando 750

The earlier classic scene is dominated by British bikes – model from marques like Norton, BSA, Triumph, Velocette, Royal Enfield, Matchless and Ariel.

These generally use single or twin-cylinder, air-cooled engines, in steel tube frames with basic suspension and brakes.

Performance is modest, but they’re packed with character, and with sensible modern upgrades to things like valve gear, ignition and electrics, reliability is much better than with the original bikes.

More modern classics can offer near-contemporary performance. A 1999 Honda Fireblade or Yamaha R1 is a ‘classic’ bike, that makes around 150bhp and weighs under 200kg – impressive stats indeed.

Even if you don’t need ultimate performance, something like a 1996 Suzuki Bandit 1200 is a reliable, good-looking daily ride that’s practical and cheap to run.

Examples of Classic and Modern Classic Motorcycles: 1999 Honda Fireblade, Yamaha R1 or anything pre 1970!

Cruiser

The cruiser is a sort of halfway-house between a full-on extreme chopper and a more conventional naked machine.

This is what the likes of Harley-Davidson do best, and its Sportster and Big Twin ranges offer a plethora of hot takes on the cruiser design.

You get a kicked-out front end for stability in straight lines, a big shiny centrepiece engine, chromed parts everywhere and a low-slung back end.

Foot controls are generally set forward, towards the front wheel, giving the typical cruiser riding position, and bars can be straight, pullback or ‘apehanger’ types, depending on taste.

Triumph Rocket III

Cruiser: Triumph Rocket III

Triumph’s Rocket III and Yamaha’s V-Mac offer an intriguing variation, sometimes dubbed the ‘power cruiser’.

These offer much more power than the usual Harley-Davidson output, with the 150bhp+ 2.3litre Rocket III in particular giving hilarious performance from its gigantic three-cylinder motor.

Smoking tyres, slingshot-style acceleration, and minimal cornering clearance is what we expect from these beasties, and that pretty much sums up the power cruiser experience.

Examples of Cruiser Motorcycles: Harley-Davidson Sportster/Big Twin, Triumph Rocket III, Yamaha V-Max

Electric

The future of motorcycling? The biking world really is split down the middle on this at the moment, because electric machines are still very much in their infancy with only a few niche manufacturers, high prices, limited range and performance, and nowhere near the performance and practicality of conventional petrol-powered bikes.

Zero Motorcycles

Zero Motorcycles electric bike

The Zero range works well, looks okay and is pushing as close as the cutting edge will allow to being a practical option.

The Alta off-road machine did some amazing work in dirtbike racing. And there are several firms making small commuting bikes, which are a good option for a sub-10 mile commute in town, where you can charge up at both ends.

Examples of Electric Motorcycles: Harley-Davidson Livewire, Zero SR/F, Vespa Electtrica

Enduro 

A notch down from full motocross bikes, enduro machines are for more gentle dirt action – but they’re still very capable bikes.

They often have lights and road equipment fitted (since many enduro competitions use public roads to move about between sections) and it’s easy to register most enduros for the road.

Honda CRF250RX

2019 Honda CRF250RX enduro

You won’t want to do too many miles on one though: the accommodation is Spartan, and running a fairly highly-tuned 450 single cylinder engine at normal road speeds will wear it out in no time.

But the odd short commute on a sunny day is easily done – even more so if you make some mods to tyres, wheels, brakes and gearing.

Having a set of ‘road’ wheels with sticky rubber, higher gearing and a larger brake disc lets you convert an enduro bike into a supermoto, which is a genuine hoot for urban and twisty backroad use.

Examples of Enduro Motorcycles: Husqvarna 701 Enduro, KTM XC250

Maxi Scooter 

The maxi-scooter class is a fairly recent innovation – big-bore scoots only really appeared at the turn of the century. But they’ve taken off massively since, particularly in mainland Europe, where they sell by the boatload.

The idea is simple enough: take the convenience, weather protection, ease-of-use and practicality of a small, 125-200cc automatic scooter, then cranks it up with a 400cc+ engine, and corresponding chassis upgrades.

Add on a larger set of bodywork and you have all the upsides of the smaller scoots, but with three-figure top speeds, and the performance to run on motorways for much longer trips. That means 50mile+ commutes are manageable, as is two-up touring trips.

Suzuki Burgman

Suzuki Burgman maxi scooter

Examples of Maxi Scooters: Yamaha T-Max, Suzuki Burgman, Honda Silver Wing

Moped 

The ‘moped’ moniker is a portmanteau word – ‘mo’ for motor and ‘ped’ for pedal. Because the original definition from the 1950s was a bike that came with an engine but also had pedals fitted, for starting, and assisting on steep hills.

The engine itself was limited to less than 50cc, and the top speed was also capped at 30mph.

Today there’s no need for pedals, but the engine capacity and speed limits remain. A modern moped has a sub-50cc engine (usually 49cc), and is limited to a maximum speed of 30mph.

Those restrictions do mean that a moped can be ridden by 16-year-olds though, making it the only choice for riders who want to start out on the road as early as possible.

Neos

Neos moped

The majority of current 50cc mopeds are scooters, so they have a simple automatic transmission, small wheels, step-through chassis design and full bodywork. There are some ‘proper’ 50cc motorbikes though, with manual gearboxes and conventional chassis setups.

Examples of Mopeds: Peugeot Kisbee 50, Honda Vision 50

Motocross

If you’re serious about hardcore dirt riding, these are the bikes for you! Strictly for off-road work, most MX bikes aren’t legal for road use, and are generally restricted to dedicated race tracks or private land.

Engines are almost always single-cylinder two or four-stroke setups, with high power outputs and specified class sizes – generally 125s, 250s, 400s and 450s.

These are bolted into heavy duty frames which can absorb huge levels of punishment. High jumps, whoops and crashes all put huge force into the frames, which get an incredibly harsh life.

2019 Honda CRF450R

2019 Honda CRF450R – motocross bike

Suspension and swingarms get similar treatment so also need to be bomb-proof. That means super-thick fork legs and tough aluminium swingarm – and the suspension components also need to be quickly and easily stripped, serviced and rebuilt to keep them up to spec.

Few machines get such a hard life, and four-stroke MX engines in particular need careful care if they’re not to blow up in an explosive fashion.

Parts are ‘lifed’, and if you don’t replace a piston, valve or con-rod at the recommended interval, it will generally fail, causing extensive damage to he rest of the engine that will cost far more to repair.

Examples of Motocross Bikes: KTM, Husqvarna, Kawasaki

Naked

This is motorcycling at its most basic and stripped down – just as its used to be when your grandad started riding.

The essence is an engine, frame, suspension and wheels – and little more. There’s no windscreen or fairing to get in the way, and the riding position is simple, upright and relaxed.

Engine and chassis components are generally all on show, so designers have to take care to make things look pretty and tidy.

That means tucking away fuel hoses, electrical wires and control cables, while water-cooled engines are often styled like air-cooled lumps, with faux fins and machined cases, and radiators cunningly hidden behind frame rails or subtle covers.

The naked sector has always been popular, from the Suzuki GS and Kawasaki Z rangers from the 1970s, through to the Honda CB fours and Yamaha XJs and XSs in the 1980s then Ducati’s Monster series in the 1990s and through to the present day.

You can have high performance of course: the current BMW S1000R and KTM Duke use their firms’ highest-outpout engines in barely de-tuned form, and both make around 175bhp.

Honda CB650F

Naked bike: Honda CB650F

For most riders, the ideal naked roadster tends to be a little less frantic, with upper-middleweight machines like the Kawasaki Z800, Triumph Speed Triple or Yamaha MT-09 giving torquey engine performance in a light, agile chassis package.

Examples of Naked Motorcycles: KTM 790 Duke, Suzuki SV650, Kawasaki Z650, BMW S1000R

Scooter 

The motor scooter first appeared between the wars, combining basic motorcycle dynamics with a slick look and more accessible ergonomic design.

Leg-shields, foot-boards and a ‘step-through’ frame design meant commuters could ride to office jobs without getting grubby, whilst an enclosed engine and automatic (or semi-auto) transmission kept things clean and simple.

Honda SH300i

Honda SH300i scooter

Even now, most modern scooters stick with these design cues, while adding a large underseat storage space, clean, fuel-efficient engine and safety upgrades like ABS or linked brakes.

Premium offerings like Yamaha’s XMAX range or scooter from Piaggio and Vespa give reliable, cheap, easy daily transport to millions of riders across the globe.

Examples of Scooters: Piaggio, Vespa, Yamaha, Peugeot

Scrambler 

The original ‘scramblers’ were off-road competition machines in the 1950s and 1960s. These were some way off modern MX bikes – generally using road bike engines and frames with some extra ground clearance, high-level exhausts and knobbly tyres.

Ducati Scrambler
Ducati Scrambler

However, a modern scrambler is something rather different – a bit like a retro roadster, redesigned to look like something more capable away from the tarmac.

BMW, Triumph, Ducati and Yamaha have all built their own versions, and some of them have been successful although most of them are just a styling exercise, and if you wanted to take on much more than a fire road or gravel track, you’d be well advised to look elsewhere.

As stylish urban rides or weekend back-road blasters though, they make a lot of sense!

Examples of Scrambler Motorcycles: Ducati Scrambler, Triumph Street Scrambler

Sidecar

The original thinking behind a motorcycle and sidecar outfit was to give car-type carrying capacity to people who couldn’t afford a four-wheeler.

In post-war Britain, motorcycles were much more accessible to working people than cars, so bolting on a two-man sidecar meant the typical family could go anywhere they fancied of a weekend, and even take a three-wheeled summer holiday!

By the 1960s though, cheap cars like the Austin Seven, Mini and others were gradually eroding this benefit, and sidecars are now a bit of an anachronism.

The downsides are obvious: you have almost the same width as a car so you can’t filter through traffic jams, but you don’t have the roof, heater and windscreen, so you can end up sitting in the rain, stuck in traffic.

Sidecar

Sidecar

The riding dynamics of a motorcycle and sidecar are also rather arcane, and require some rather weird riding techniques.

Speeding up on left-handers helps the bike turn, as the motorcycle part tries to overtake the unpowered sidecar, and slowing down on right-handers does the opposite.

On the plus side, they can’t fall over, and offer a good option for riders who can’t operate solo motorcycles due to illness, disability or old age. Sidecars are almost all custom-built, British firms Watsonian-Squire is one of the biggest builders, and can convert almost any bike into a sidecar outfit.

Sports bikes and Superbikes 

Sports bikes used to be the most popular type of motorcycle, particularly in the UK. Through the 1980s, 1990s and early 2000s, Japanese sports bikes completely dominated the sales charts, with models like the Honda CBR600, Yamaha FZR1000, Kawasaki ZX-7R and Suzuki GSX-R750 all being hugely successful.

Now they just don’t sell in the same numbers, but sports bikes are still extremely common in almost all markets.

Although the definition is pretty broad, a sports bike will have a fully aerodynamic fairing, powerful engine, high-quality suspension, advanced brakes and committed riding position.

The capacity classes used to closely follow race regulations with 250, 400, 600, 750 and 1000cc machines common to all the firms. Nowadays though, racing has less influence on road sports bikes, but you can still buy sports bikes in a range of engine sizes.

Yamaha YZF-R3

Yamaha YZF-R3

The superbike class has the highest outputs, with more than 200bhp available from the one-litre motors. BMW’s S1000RR and Kawasaki’s ZX-10R produce the highest outputs, with over 210bhp from each.

Meanwhile, Aprilia and Ducati have gone a step further, boring their RSV4 and Panigale V4 engines out to 1100cc, with a corresponding ten per cent power and torque increase. The Panigale V4S makes an incredible 212bhp.

These hugely powerful engines are matched by high tech chassis components and electronic rider aids. Semi-active electronically-controlled suspension, race-type brake calipers and discs, super-stiff frames and complex traction control/ ABS system are de rigeur.

Examples of Sportsbikes Motorcycles: BMW S1000RR, Kawasaki ZX-10R, Ducati Panigale V4

Sports tourer 

This is a pretty self-explanatory definition – a sports-touring bike combines elements of a sportier machine with more touring features. So you’ll have the powerful engine, light weight, adjustable suspension and strong brakes of a sportbike, in a less aggressive package.

Seats are more comfy, riding positions are more upright and relaxed; windscreens and fairings give more wind and weather protection. There will also be more spacious pillion accommodation, and often some way of fitting hard luggage to the back end of the bike.

Honda VFR800F

Honda VFR800F sports tourer

In recent years though, the sports touring class has been supplanted to some extent by the adventure class.

They have the same two-up touring abilities, in slightly taller form, and more dynamic versions like Ducati’s Mulitstrada, KTM’s Super Sventure and BMW’s S1000 XR have performance that can match or beat many traditional sport-tourers.

Examples of Sports Tourer Motorcycles: Honda VFR800, Triumph Sprint ST, Ducati ST4, Yamaha FJR1300, BMW S1000 XR, Ducati Multistrada, KTM Super Adventure

Streetfighter 

Perhaps fittingly, the streetfighter class of bike evolved itself from the street, in a genuinely organic fashion.

When fully-faired sportsbikes appeared in the 1980s, many riders snapped them up, and rode them in the manner they were intended. Of course, the inevitable then happened – many of these plastic-faired bikes were crashed, at which point their owners learned how expensive replacement bodywork panels were.

It was not uncommon for a bike that was completely undamaged in terms of engine and chassis to be an economic write-off, simply because its plastic fairing was smashed, and replacements would cost a few thousand pounds; more than the whole bike was worth.

Yamaha MT-10 SP

Yamaha MT-10 SP streetfighter

These owners then did what they could to get the bike road-legal and mobile again.

Basic headlights and indicators replaced fairing-mounted lighting; conventional wide handlebars replaced clip-on race bars, and the resulted Mad Max-style machine was then put back into service.

All the power and handling of a superbike, in an unfaired, wide-barred form actually proved very popular – and before long, people were building streetfighters without even going to the trouble of crashing their sportsbikes first…

The true streetfighter has arguably been replaced by the modern hyper-naked class: bikes like Yamaha MT-10 and Aprilia Tuono are basically those firms’ R1 and RSV4 superbikes without plastic fairings, pre-built by the factories. Ducati also sold its own Streetfighter for a few years, based on the 848 and 1098 superbikes.

Examples of Streetfighter Motorcycles: Yamaha MT-10, Aprilia Tuono, Ducati Streetfighter

Hypersports/ unlimited sportsbike

Speed has always been a strong part of motorcycling’s appeal. And the ‘fastest production bike’ was a prized crown in the latter part of the 20th century, before speed became more frowned upon by society.

Suzuki Hayabusa

Suzuki Hayabusa

Kawasaki was at the forefront of this, with its GPZ900R, GPZ10000RX, ZX-10 and ZZ-R1100 all holding this title in turn between 1984 and 1997.

But the other Japanese firms were massively envious, and launched their own various high-speed assaults in the late 1990s.

Honda’s CBR1100XX Super Blackbird was launched in 1995, and its big-bore Fireblade engine, bolted into a long, low, sleek chassis easily bested the 175mph Kawasaki ZZ-R1100 in the top speed stakes.

It didn’t keep the crown for long though: Suzuki’s 1999 GSX1300R Hayabusa had more power, less drag and a genuine near 200mph top end. By then though, legislators were unimpressed, and the big bike firms bought in a voluntary top speed limit of 300kph – 186mph – from 2001.

Examples of Hypersports Motorcycles: Kawasaki GPZ900R/GPZ10000RX/ZX-10/ZZ-R11000, Honda CBR1100XX, BMW K1300, Suzuki Hayabusa

Three wheelers/ Trikes

Sidecars aside, there are a few options for three-wheeled bikes. The traditional form is the conventional trike, often DIY builds, perhaps using an old air-cooled VW engine and transmission with two wheels at the rear.

If you want a pre-built version, Harley-Davidson actually produces factory-built trikes, powered by its own V-twin engines and a bespoke rear suspension and chassis conversion.

Honda Gold Wing trike conversions are also popular, the large engine and shaft drive making a good match for a three-wheeler.

The other option is to have your two wheels out the front, aka a reverse trike. You can have this in a non-leading form, with old Morgan three-wheel cars or more modern three wheelers from the likes of Bombardier with its Can-Am Spyder.

Harley-Davidson Freewheeler

Harley-Davidson Freewheeler trike

There are some new ‘leaning’ reverse trikes available on the market now. These come in ‘scooter’ or ‘bike’ form – Piaggio’s 300 and 350cc MP3 or Peugeot’s Metropolis 400 are maxi-scooter designs that use leaning, two-wheel front ends with complex locking linkages and controls.

Touring

Traditionally, a touring bike meant a big, heavyweight machine, with large-capacity engine, all-enveloping bodywork, huge luggage capacity and luxurious seating for rider and pillion.

BMW’s K1600 LT, Honda’s Gold Wing and Harley-Davidson’s Electra Glide all fit this bill, with alternatives like Yamaha’s FJR1300, Honda’s Pan European and Triumph’s Trophy 1200 offering a similar proposition in a slightly smaller package.

2018 GL1800 Goldwing

2018 GL1800 Goldwing – tourer motorbike

The larger ‘supertourers’ generally come with sound systems, built-in hard luggage and such luxuries as a reverse gear, aid-adjustable suspension, integrated intercoms and electrically heated grips and seat.

They have enormous engines, with the K1600 and Gold Wing sporting six-cylinder engines (a flat six on the Honda, and an inline six on the BMW), shaft drive and super-smooth running.

The ‘smaller’ tourers are still imposing machines, but they offer a much more dynamic, agile riding experience.

Indeed, the Pan European and FHR1300 are both on the edge of sport-touring levels of handling and speed, and make great mid-distance commuters as well as continent-crossing touring monsters.

As with the sport-touring class, pure touring bikes have been overshadowed in recent years by the adventure class.

The biggest variants here – the BMW R1250 GS, Triumph Tiger 1200, KTM Super Adventure 1290 – all have the power and grunt to haul two people and a load of luggage across Europe in a few days, while miniaturised tech means they can also offer heaps of luxury.

Colour LCD dashboard, integrated GPS, heated grips and seats and adjustable windscreen are all common now, and can match almost anything the full-on touring class provides.

Examples: BMW R1250 GS, Triumph Tiger 1200, KTM Super Adventure 1290, Honda Gold Wing

125cc

The simplest, broadest class of all here… The 125cc is a purely statutory creation: it’s the maximum capacity which a total novice riders are restricted to when they first start riding at 17, in the UK and across Europe.

This restriction dates back to 1983: before then, learners could ride 250cc machines, with no power limit. The 1981 Transport Act cut the learner capacity limit in half to 125cc and introduced a new 9kW (12bhp) power limit, both effective from February 1983.

So any bike with a cubic capacity of less than 125cc, and peak power levels under 15bhp counts here.

There’s a massive range of new machines – from scooters and budget roadsters like the Honda PCX125 or Yamaha YS125 up to mini-superbikes like the KTM RC125 or Yamaha R125 and premium super-nakeds like the Yamaha MT-125, Kawasaki Z125 or KTM 125 Duke.

Honda CB125R

Honda CB125R

Looking for something a bit cheaper? Firms like Lexmoto, AJS and Keeway sell decent quality Chinese-made 125cc, which work well, at lower costs than the mainstream Japanese or European brands.

Other Chinese options include brands like Bullitt and Mutt, who produce good-looking bikes based on far-Eastern engines and chassis, which have a bit more style too.

Examples: Honda PCX125, Yamaha MT-125, KTM 125 Duke, Mutt Mongrel 125, Bullitt Hero 125

Now you know everything these is to know about the motorcycle, why not check out some of our latest ride reviews