KTM 450 EXC Racing (2003-2007) Piston CP - forged pistons of the extra class 89.00 mm, compression 13.0: 1

Piston CP - forged pistons of the extra class 89.00 mm, compression 13.0: 1. The piston is supplied with matching  piston rings, bolts and clips. The cylinder must be honed with special diamond honing stones. The cylinder honing is necessary with regard to the correct running clearance and the surface roughness corresponding to the piston ring.