Came YAM YZ250F 4273-2E

Camshaft Exhaust Stage 2Stage 2 is designed for mid to top end gainsAdds a 5%-10% power gainDesigned and dyno proven in the USAManufactured by utilizing state of the art valvetrain softwareCNC machined from 8620 billet, case-hardened steel for an exact fit and lobe profileEngineered 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 throttle response throughout the entire rpm range while providing excellent power gains through the mid-range and top-end.For dual cam engine.Mid range to top end increase. Designed with I.T.R. technology. Includes auto-decompression mechanism. Exhaust Valve Lash: 0.220 mm.