GFB Standard Spring (used in all valves except 1002) (GFB6115)

Go Fast Bits (GFB) is a renowned manufacturer of high-performance automotive components, specializing in innovative and precision-engineered turbocharger accessories. Known for their blow-off valves, boost controllers, and other turbo-related products, GFB enhances engine performance, efficiency, and reliability. Trusted by enthusiasts and professionals, GFB delivers cutting-edge solutions for both street and motorsport applications.