Grimmspeed Manual Boost Controller Wheels When driving your high performance

When driving your high performance Subaru BRZ/Scion FR-S to the limit

Audi Q7 non-Air Suspension (2007-2016) F: 1

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

2004-2010 E83 BMW X3 2

ST XTA coilovers for the VW Jetta MK6 2

Grimmspeed Manual Boost Controller Wheels When driving your high performanceThe 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