4023 1in Camshaft Intake Stage 1 Yamaha WRF450 2003 2015

Features: Adds 5%-10% power gain. Designed and dyno proven in the USA. Engineered by utilizing state-of-the-art valvetrain software. CNC machined from 8620 billet, case hardened steel for an exact fit and lobe profile. Select 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-end. For low end torque.. Made to be drop-in cams that use stock valve springs (unless noted).. Top end power increase with some bottom end loss. For dual cam engine. Intake Valve Lash: 0.150 mm..