Scat Racing Performance Camshaft. These are supplied with instructions and New Cam Followers must always be fitted with new camshafts. Please See Spec Below the choose the correct Scat camshaft for your engine from the drop down box. C20, Valve Lift: 0.372 inches, Duration: 278 degrees C25, Valve Lift: 0.423 inches, Duration: 275 degrees C35, Valve Lift: 0.451 inches, Duration: 286 degrees C45, Valve Lift: 0.460 inches, Duration: 296 degrees This product can be a special order and will be ordered for you from the manufacturer if we dont have stock. We require payment at the time of order. Delivery may take up to 12 weeks