Use this TiAL 50mm blow off valve to relieve excess pressure during off-throttle situations to reduce supercharger clutch and gear wear. Reduce heat soak by releasing unused air in the charge tube. The body and all internal components are CNC-machined from 6061 aluminum alloy. Securely mounts with a V-Band clamp design. Valve seal utilizes a Viton O-ring that is clamped in place for maximum durability. Valve stem and guide are Teflon-lubricated and hard anodize-coated for wear resistance. Blow-off Valve also comes with a machined aluminum banjo-type air fitting and bolt with oversized 10mm hose barb for quick actuator response. INCLUDES 8 PSI SPRING.