Hot Cams Camshaft Single Cam - Stage 2 - Yamaha - 4065-2

Computer Numerical Control (CNC) from 8620 billet steel and case harden. Designed and dyno proven in the USA. Engineered by using valvetrain software. Adds a 5%-10% power gain. Select cams feature Hot Cams Improved Throttle Design (I.T.R.) technology; these cams improve throttle response throughout the entire rpm range while providing excellent power gains through the mid-range and top-end. Designed for mid to top end gains.. Engineered to be drop in cams that use stock valve springs (unless otherwise noted)..