High inertia, low weight crankshaft for competition applications.

This crankshaft fits BSA crankcases without modification.

There are three options of right hand drive shaft

No generator shaft

Short generator shaft to suit Interspan rotors

Long generator shaft as per standard BSA

This crankshaft does not have a sludge trap and you are required to change your oil regularly. Each crank is built to order and balanced to the piston that you will be using and the application the engine will be used for.