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The Camshaft Stage 1 is part of the latest collection from Hot Cams.. Features: Designed and dyno proven in the USA. Engineered by using valvetrain software. Adds a 5%-10% power gain. CNC machined from 8620 billet, case hardened steel for an exact fit and lobe profile. 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 low end torque.. Engineered to be drop in cams that use stock valve springs (unless otherwise noted).. Low and mid rpm torque are increased, with top horsepower slightly increased over stock. Designed with I.T.R. technology. Uses stock valve springs. Uses stock auto-decompression mechanism. Intake Valve Lash: 0.120 mm. Exhaust Valve Lash: 0.280 mm.. Specifications: Application: Exhaust| Intake. Exhaust Duration: 266.26�. Exhaust Lift: 8.84 mm. Exhaust Lobe Centerline: 107�. Intake Duration: 241.61�. Intake Lift: 9.27 mm. Intake Lobe Centerline: 100�. Product Name: Camshaft. Type: Stage 1. Units: Each. To fit: HONDA CRF 250 R 2016 All Models. HONDA CRF 250 R 2017 All Models. Manufacturer part number: 1318-1. View all Hot Cams. View all Parts and spares..