STAINLESS STEEL VALVES BC valves are made from premium stainless steel, fully machined and swirl polished for ultimate air flow. Dished head for added weight savings and increased valve control at high rpm. Standard, and oversized head diameter available. Part #: BC3101 VALVES - 30.50mm EXHAUST (Mitsubishi 4G63) Part #: BC3100 VALVES - 34.00mm INTAKE (Mitsubishi 4G63)
