Simplify your 2015-17 STI engine bay with The GrimmSpeed Sound Generator Plug Kit. The stock sound generator is an unnecessary system that contributes to...
Black Stealthbox Air Intake Kit (060060) by GrimmSpeed. Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake...
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...
Red Stealthbox Air Intake Kit (060067) by GrimmSpeed. Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake...
Manual Stubby Stainless Steel Shift Knob by GrimmSpeed. 1 Piece. Machined from solid 304 stainless steel right here in Minnesota, the GrimmSpeed Stainless Steel...
Clamps, Hangers and Misc Exhaust ComponentsExhaustGrimmSpeed
Downpipe Exhaust Adapter (077044) by GrimmSpeed. Main Piping Diameter: 3". Exhaust leaks seem to be an all-too-common issue with most modded Subarus. They tend...
Clamps, Hangers and Misc Exhaust ComponentsExhaustGrimmSpeed
Downpipe to Catback Adapter (077046) by GrimmSpeed. Main Piping Diameter: 3". Exhaust leaks seem to be an all-too-common issue with most modded Subarus. They...
Refine your gear shifting with the GrimmSpeed Swap-Top Weighted Shift Knobs! These unique shift knobs are available in two different body profiles, either bulb...
Refine your gear shifting with the GrimmSpeed Swap-Top Weighted Shift Knobs! These unique shift knobs are available in two different body profiles, either bulb...
GrimmSpeed Shift Knobs have been extremely popular in the Subaru Enthusiast Community for a long time. The option of material, weight, size and finish has made them the go-to...
GrimmSpeed Shift Knobs have been extremely popular in the Subaru Enthusiast Community for a long time. The option of material, weight, size and finish has made them the go-to...
GrimmSpeed Shift Knobs have been extremely popular in the Subaru Enthusiast Community for a long time. The option of material, weight, size and finish has made them the go-to...
The GrimmSpeed Timing Belt Guide replaces the thin factory steel component with a billet 6061-T6 aluminum unit that increases belt contact and reduces deflection under load. Designed to...
The EJ engine bay is iconic; raw, mechanical, and unmistakable. It deserves a finishing touch that lives up to its reputation. Our GrimmSpeed Titanium Alternator...
The GrimmSpeed Axle-Back Exhaust transforms the sound and character of your 2022-2025 GR86 or BRZ while preserving the everyday comfort you love. Designed as a direct replacement for the OEM...
Your VA engine bay deserves more than plain plastic. Our GrimmSpeed Titanium Fender Shrouds bring a bold, motorsport-inspired aesthetic under the hood, replacing the factory covers...
The FA20 engine bay has a modern, performance-driven look, and it deserves a finishing touch worthy of the build. Our GrimmSpeed Titanium Pulley Cover elevates one...
Constructed using a 5-ply process and high quality silcione material, this coupler will enable you to utilize a stock location, sti or aftermarket turbo...