Zippers Performance Z413-933S Red Shift 587 Chain Drive Camshaft Set for Twin Cam 07-17 w/OEM 110ci Engine587 HS: This cam was designed and optimized to be the best bolt in cam for the OEM 110ci platform, dramatically increasing power and torque across the entire RPM range. Unlike many other cams, the 587 was designed to work with the larger valves and heavier springs that the CVO engines are equipped with. Specially designed cam lobe ramps ensure quiet operation of these heavier parts, while the lobe profiles take advantage of the high flow heads to