Grimmspeed Manual Boost Controller Wheels AVO utilizes the latest technology

AVO utilizes the latest technology in lightweight internal piston valving to ensure optimum blow-off response at all times

ST XTA coilovers for the VW Jetta MK6 2

2004-2010 E83 BMW X3 2

We are now offering straight and 90 degree MINI-cat O2 sensor spacers

Grimmspeed Manual Boost Controller Wheels AVO utilizes the latest technologyThe GrimmSpeed new and improved manual boost controller is renowned as the most refined manual boost controller on the market. The extra long stainless dual ball detent system make the GrimmSpeed controller one of the most fine tunable boost controllers available, allowing from +0 60psi without having to switch springs. No more swapping out soft and stiff springs for higher or lower boost levels. The new GrimmSpeed manual boost controller now features