Cam Kx450F 2186-1E 2186-1ECamshaft Exhaust Stage 1Stage 1 is designed for low end torque 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 Engineered to be drop in cams, that use stock valve springs (unless otherwise noted). Select cams feature Hot Cams Improved Throttle Design (ITR) technology; these cams improve