Optimised for mild performance with twin carburettors Power focused in the bottom and mid rev-range Requires AC1092017 cam wheel, bolts included The Scat C25 Camshaft is the perfect upgrade for mild performance builds in all air-cooled Type 4 engines using solid cam followers. Designed to enhance low to mid-range power, it's an excellent choice for engines equipped with twin carburettors, delivering smooth and responsive performance where you need it most. This camshaft requires the bolt-on AC1092017 cam wheel, which is sold separately, though the necessary bolts come included with the cam.