Hot Cams Racing Exhaust Camshaft Stage 1 Yamaha Yfz450R / 450X Elevate your ride's performance effortlessly with Hot Cams Stage 1 Racing Exhaust Camshaft. Engineered for a seamless fit, it requires no core, making installation a breeze. Designed to work flawlessly with stock valve springs and rockers, it offers an easy upgrade path for most vehicles. It features model-specific adjustable cam sprockets for precise timing adjustments and promotes enhanced combustion cycles. This leads to sharper throttle response and significant power gains over standard setups, breathing new life into your machine's capabilities. Features: High performance racing camshaft No core required Designed to be use with stock valve springs and rockers on most applications (unless noted) Adjustable cam sprockets supplied (model specific) Improved throttle response technology Specifications: Exhaust Cam Lobe Center: 105 Exhaust Cam Lobe Duration at 1mm: 258 Exhaust Cam Lobe Lift: 8.640mm Exhaust Cam Valve Lash: 0.220mm