YAMAHA YZF R1 2004-2006 Stage 2 tuning kit

The camshafts are reprofiled and surface-treated. The cylinder is re-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. The cylinder

head is revised: the valve seats are milled to optimize flow and the transitions are optimized to increase performance. Including the

combustion chamber and channels glass bead blasting.