Red Manual Boost Controller (070002R) by GrimmSpeed. Welcome to the most refined manual boost controller available on the market today. During development, we worked...
Black Manual Boost Controller (070002) by GrimmSpeed. Welcome to the most refined manual boost controller available on the market today. During development, we worked...
At GrimmSpeed we know that not everyone is ready for one of our full aftermarket intake systems, but still wants a safe and easy way to increase power...
Red Stealthbox Air Intake Kit (060067) by GrimmSpeed. Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake...
Black Stealthbox Air Intake Kit (060060) by GrimmSpeed. Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake...
Its no secret that GrimmSpeed intakes feature performance and aesthetics that lead the pack. With years of design theories and knowledge gained from our...
The Original Direct-Fit BCS for Subarus - Now for ANY Platform! When it comes to boost control on turbocharged engines, GrimmSpeed Direct-Fit, 3-Port Electronic Boost Control...
The GrimmSpeed MazdaSpeed3 Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your...
The GrimmSpeed MazdaSpeed6 Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your...
Antenna Delete Plate by GrimmSpeed. 1 Piece. The GrimmSpeed Antenna Delete Plate replaces the OEM whip-style antenna that many drivers dislike and therefore do...
Manual Stubby Stainless Steel Shift Knob by GrimmSpeed. 1 Piece. Machined from solid 304 stainless steel right here in Minnesota, the GrimmSpeed Stainless Steel...