There are no springs

38mm  / 1

Strut: Strut lower fixing diameter has to be 56 mm or 62 mm

the BoostGate50 focuses on charge air control by managing the compressed air on the cold side of the turbocharger system

it is 50% lighter and 25% smaller than the competition while flowing 330 CFM – making it the highest flowing BOV of it’s type on the market

BOV ProPort GenV Supercharger Black Touch Up Paint There are no springsProPort by Turbosmart is an All New 54mm (2. 13in) Blow Off Valve with a tiny footprint and massive flow. The ProPort flows 420 cfm which is enough for 3500 HP and is in a league of its own standing 30mm (1. 2in) lower than PowerPort while flowing over 25% more than the Market leading 50mm Raceport. Features include our unique locking collar design, new unique vent profile, sensor cap option and spring options for all turbocharged and supercharged