HOT CAMS CAMSHAFT STAGE 1 EXHAUST YAMAHA WR450F 16-18 YZ450F 18-19 YZ450FX 16-19

Stage 1 ITR: Dual-cam motor. Intake and exhaust cams sold separately. Excellent bottom-end and midrange increase. Includes auto-decompression mechanism. Uses stock valve springs. Exhaust Duration (Degrees at 1mm): 205.20 Exhaust Lift (mm): 9.576 Exhaust Lobe Center (Degrees): 101.58 Exhaust Valve Lash (mm): 0.185 Camshaft Hot Cams Stage 1: Excellent bottom-end and midrange increase. Uses stock valve springs.