4303 3E Camshaft Exhaust Stage 3 Yamaha YFZ450R 2012 2025

Features: Stage 3 is designed for peak top end horsepower. For dual cam engine. Adds a 5%-10% power gain. Designed and dyno proven in the USA. Manufactured 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.. Engineered to be drop-in cams, that use stock valve springs (unless otherwise noted).. Use with 0925-1124 to provide high rpm power. These cams are best suited for higher speed riding applications and oversize engines. Designed with I.T.R. technology. Includes auto-decompression mechanism. Exhaust Valve Lash: 0.220 mm..