Ultra-Gold™ ARC Series Aluminum Rocker Arms feature an Arced, Recessed, Contoured design. Using cutting edge design techniques and manufacturing processes, they increase engine power, enhance valve train stability and improve oiling. Ultra-Gold™ ARC Rockers feature a new extrusion based on improvements developed through FEA analysis, resulting in an even stronger, stiffer body without compromising mass. A new arced channel and contoured top, similar to a bridge design, give the rockers the best strength-to-weight ratio possible. The body has additional CNC contouring to improve clearances for valve covers and springs.
Rocker for Ford FE Engines