Hot Cams Racing Camshaft Single Cam Stage 2 Yamaha Raptor 660 Yfm660R The Hot Cams Stage 2 Racing Camshaft is engineered for those seeking serious top-end power and enhanced mid-range performance over Stage 1 cams. It's a straightforward drop-in solution that doesn't require extensive modifications or a core charge simply install and experience the difference. Compatible with stock valve springs and rockers for most setups, it features adjustable cam sprockets, allowing for precise tuning to match specific riding needs. Riders will notice improved throttle response and more efficient combustion right away, making it an ideal choice for enhancing motorcycle performance without the hassle. Features: Improves Top End over Stage 1 Mid-range gain over Stage 1 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 Improved intake charge and combustion cycle over stock Specifications: Exhaust Cam Lobe Center: 104 Exhaust Cam Lobe Duration at 1mm: 259 Exhaust Cam Lobe Lift: 10.280mm Exhaust Cam Valve Lash: 0.250mm Intake Cam Lobe Center: 106 Intake Cam Lobe Lift: 9.750mm Intake Cam Valve Lash: 0.200mm Intake Lobe Duration at 1mm: 246