Athena Race Kit CR450F 17-.. 98mm BIG BORE

This kit offers a significant increase of power - especially at lower RPM - on all the power curve, offering high performances without modifcations of the engine crankcase and maintaing the rest of the original components. The nickel silicium coated cylinder is matched with a forged piston to reach best performances and reliability, thanks to severe tests of resistance at the highest temperatures and pressures