HOT CAMS EXHAUST CAMSHAFT YAMAHA WR250F 15-17, YZ250FX 15-16, STAGE 1

Part No. 56-C159.EX.STG1

YAMAHA WR250F 2015 - 2017,

Hot Cams Stage 1 exhaust cam - 4299-1E: Excellent bottom-end and mid-range power increase: Designed with Improved Throttle Response (I.T.R.) technology: Uses stock valve springs: Dual-cam engine: Intake and exhaust cams sold separately: Supplied with decompression mechanism.

EXHAUST LIFT: 8.59mm

EXHAUST LOBE CENTER: 103.44

EXHAUST DURATION (@1MM): 246.70 degrees

EXHAUST VALVE LASH: 0.225