CAM YAM YZ450F 4278-1IN

Camshaft Intake Stage 1Adds 5%-10% power gainDesigned and dyno proven in the USAEngineered by utilizing state-of-the-art valvetrain softwareCNC machined from 8620 billet, case hardened steel for an exact fit and lobe profileSelect cams feature Hot Cams Improved Throttle Design (ITR) technology; these cams improve throttle response throughout the entire rpm range while providing excellent power gains through the mid-range and top-endFor low end torque.Made to be drop-in cams that use stock valve springs (unless noted).Low to mid range increase. Designed with I.T.R. technology. For dual cam engine. Intake Valve Lash: 0.160 mm.