A rocker arm, in the context of an internal combustion engine of automotive, motorcycle and etc types, is an oscillating lever. They are typically in between the pushrod and the intake and exhaust valves to increase horsepower through reducing friction. For car engines the rocker arms are generally steel stampings, providing a reasonable balance of strength, weight and economical cost. Aluminum is often used for high performance.
Maxpeedingrods uses aluminum material for quality rocker arm to meet your engine part.