CODO Roller Rocker + Camshaft S1 are commonly used for mid-ranged power. For mid-range power, mid-range torque is needed. This torque is around 5000 rpm. The camshaft is used to help maximize the horsepower of your bike. In order to maximize horsepower, you will need to make a few alterations to your engine including modifying airflow, exhaust, and performance. This is where the camshaft comes into play. Installing a performance camshaft allows your bike to increase its horsepower by boosting the duration and timing of the valve openings. Ultimately, this can help accelerate your bike more quickly. This kit comes with added roller rockers to help reduce friction and wear. With reduced friction, this can also increase the horsepower of the engine. Pick one up today to get that added acceleration for your bike and ride!