CODO Roller Rocker + Camshaft S2 are commonly used for mid to high ranged power. This is roughly around 7000rpm. This Roller Rocker + Camshaft bundle will help you get the horsepower you need. When installing both the roller rockers and camshaft, your engine's performance and horsepower will increase greatly. With the camshaft's ability to boost the duration and time of the valve openings and the roller rocker's ability to reduce friction, users can expect to get that added horsepower they are looking to get. These are a good pick-up if you're looking to get that added acceleration to your ride!