What bikes are raced at the Isle of Man TT?

What bikes are raced at the Isle of Man TT?

Superstock 

As the name Superstock suggests, this class is for 'stock' road-going production motorcycles which feature only minor modifications, including, the removal of all stock road equipment such as lights and mirrors. The rear shock can be replaced and front fork internals can be modified. The exhaust system can be replaced and the fitment of a power commander is also allowed.

Despite the Superstock bikes being very close to standard, a 1000cc machine still produces in excess of 180bhp and can lap most circuits only a few seconds off full Superbike specification machines. The class is a breeding ground for up and coming racing talent and provide rider's with a great chance to showcase their talent without spending big money. 

Supertwin 

Supertwins are four stroke twin cylinder machines originally sold for road use with a water cooled engine of up to 650cc. A number of changes and modifications are permitted to the frame, swing arm, suspension, exhaust, brakes etc as deemed in the technical regulations.

Supersport 

The Supersport class features road-going, production based 'showroom look-alike' machines, although changes are permitted to exhausts, suspension internals and also tyres.

They are powered by engines over 400cc and up to 600cc four stroke four cylinder: 600cc up to 675cc four stroke, three cylinder with minimum weights of 161kg for all configurations.

Superbike 

Superbikes competing in this class are race machines developed from production road-going, litre-class sportsbikes of between 1000-1200cc. Stripped of lights and road-bodywork, the machines are lightened significantly and fitted with up-rated suspension, chassis, engine parts and full race exhaust systems. The result is a machine that produces in excess of 200bhp and is capable of speeds of 200mph. 

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