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 oversize head.
Choose Size and Side (intake/exhaust) from drop down menu: 34.0mm Intake (standard head diameter) 30.5mm Exhaust (standard head diameter) 34.5mm Intake (+.5mm head diameter) 31.0mm Exhaust (+.5mm head diameter) 35.0mm Intake (+1mm head diameter) 31.5mm Exhaust (+1mm head diameter)
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