More Grimmspeed parts:
All Grimmspeed parts | WRX 2022+ | WRX 2015-2021 | WRX 2008-2014 | WRX 2002-2007 | STI 2015-2021 | STI 2008-2014 | BRZ 2022+ | BRZ 2013-2020 | GR86 2022+ | Gaskets and Hardware | Engine Covers and Caps | Engine Dress Up | Intercoolers Top Mount | Interior Shift Knobs | Intercoolers Front Mount | Engine Power Packages | Cooling Radiator Shrouds | Intake Cold Air | Strut Bars | Turbo Inlets / Air Inlets | Electronics Boost Control Solenoids | Exhaust Downpipes and Y-Pipes | Turbo Blow Off Valves | Engine Head Gaskets | Exterior License Plate Holder | Cooling Radiator Hoses | Exhaust Cat Back | Intercooler Piping | Engine Batteries and Tie downs
Shop Grimmspeed parts for the 2004-2007 Subaru Impreza WRX STI. The GD-chassis US STI runs the EJ257 2.5-litre turbocharged flat-four with a 6-speed manual and Driver Controlled Center Differential - there was no automatic - every Grimmspeed product in this collection is fitment-tagged for that exact vehicle, so check the product fitment notes against your car before ordering.
What Grimmspeed parts fit my 2004-2007 Subaru Impreza WRX STI?
Everything in this collection - each product listed here is a Grimmspeed part fitment-tagged for the 2004-2007 Subaru Impreza WRX STI. Fitment can still vary with trim level and factory options, so confirm the fitment notes on the product page before ordering.
What should I know about 2004-2007 STI fitment?
This collection is tagged for the GD-chassis STI only, which is a separate fitment from the same-years WRX - different engine build, brakes, drivetrain and suspension. Match parts to the STI listing, not the WRX one.
Where can I find other Grimmspeed parts?
The full Grimmspeed collection is linked at the top of this page. From there you can also shop Grimmspeed by vehicle or by part type - WRX 2022+, WRX 2015-2021, WRX 2008-2014, WRX 2002-2007, STI 2015-2021, STI 2008-2014 and more are all linked above.