1. Made of precision 6061 Billet Aluminum. 

    Race Valve "OPEN" with Mounting Hardware (Alum. Flange)

    The HPI Blow Off Valve is anodized black for increased durability! 

  2. This BLOW OFF VALVE was made by High performance Injectors and is an exact same blue print blow off valve as procharger big red for 1/3 the price. Same high quality material and same exact specs as big red. 60MM RATED FOR 500 TO 2000 HORSE POWER. Comes with aluminum flange and bolts. Please see all pictures with the parts.

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We also sell Throttle Body, Injectors, Stand Alone Harnesses, Co2 Waste gate kits, Corvette headlight lenses, Corvette Diff trans brace. HPInjectors.com