YAMAHA YZF R1 2004-2006 Stage 1 tuning kit

Tuning kit 

Stage 1 tuning kit, CP - piston 77 mm, compression ratio 13.0:1. 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.

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