The COMP Cams High Energy die cast aluminum roller rocker arms are new rocker arms from the value train leader that have been designed for street and moderate race use. They feature a die cast body created from aluminum with a needle bearing fulcrum and roller tip. The die cast, larger than stock body offers the strength properties and light weight of aluminum while the specially engineered fulcrum and roller tip decrease friction and lower oil temperatures, thus improving response and horsepower.