GrimmSpeed

Adapt your GrimmSpeed 08-14 WRX or 05-09 Legacy Top Mount Intercooler for use with “STI-Style” OEM or aftermarket turbochargers! Looking to upgrade...

The GrimmSpeed shift boot retainer will hold your shift boot in place around the base of the shift knob. This is meant for Subaru 5spd owners that ...

An FA20 BCS for Aftermarket Turbos: 1/4in Barbed Fittings - Matches the factory turbo and wastegate hose size 3-Port Solenoid - Proprietary inte...

An elegantly engineered solution: Custom Machined Adapter - Makes use of the factory inlet recirculation port, instead of blocking it off Black ...

License plates are a necessary evil on the front of our cars, but you can save your front bumper from looking boring or blocking flow to your FMIC ...

Minimize Heat Soak with the ALL NEW Turbo Heat Shield! The turbocharger is one of the hottest components in your engine bay and can have some real...

High-quality replacement TMIC Y-Pipe Kit.  Special Fitment Note: Supported fitments include only those vehicles running OEM STI and GrimmSpeed Top...

Perfect size and weight for the perfect shift, every time. The GrimmSpeed Stubby Knobs are for car enthusiasts that prefer a shift knob that's o...

A simple way to clean your bay. Simplify your 2015-17 STI engine bay with The GrimmSpeed Sound Generator Plug Kit. The stock sound generator is ...

Add a touch of class to your bay! Some OE parts look passable and others miss the mark. In the case of the factory post MAF hose, the quicker you ...

Out with the old, in with the new!     These bushing kits were created to be a replacement or upgrade for your GrimmSpeed Pitch Stop Mount. The...

SEAL the deal with a set of GrimmSpeed FA20 Head Gaskets! GrimmSpeed has set the standard for quality when it comes to aftermarket replacement gask...

Meticulous Engineering, Unparalleled Craftsmanship GrimmSpeed Intercoolers have set the gold standard for how a high performance heat exchanger sho...

As with other FMIC kits, the GrimmSpeed Front Mount Intercooler requires the removal of your factory bumper beam in order to fit its massive core. ...

A full External Wastegate (EWG) set-up consists of a EWG up-pipe and a wastegate. The EWG set-up creates better turbo spool because it can utilize ...

The Highest Quality, Built to Last! Over the years, GrimmSpeed has proven that our exhaust products are some of the highest-quality and best-perfor...

Installation Note - Take care to install the air filter onto the intake tube properly. Push the filter onto the tube no more than 1" before tighten...

With so many catback exhaust options available, our goal was to create a unique, refined sound in an extremely high-quality hand-welded system. We'...

Dress to impress! GrimmSpeed engine dress-up pieces have been extremely popular with Subaru owners over the years, but there’s always been one sma...

The WHOLE Package! GrimmSpeed knows that many of you replace all of your exhaust gasket at the same time while installing aftermarket exhaust part...

GrimmSpeed OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed we have worked with endless amounts of aftermarket gaskets, non...

GrimmSpeed OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed we have worked with endless amounts of aftermarket gaskets, non...

GrimmSpeed OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed we have worked with endless amounts of aftermarket gaskets, non...

A Heavy Duty Multi-Layer T4 Gasket with ALL Stainless Layers and Fire-Ring?? Yup! If you've dealt with sourcing turbo manifold gaskets before, you ...

Installation Note - Take care to install the air filter onto the intake tube properly. Push the filter onto the tube no more than 1" before tighten...

Sharpen your handling and reduce NVH. Follow the development of the Strut Tower Brace here. You’ve probably read somewhere on the internet that a ...

ENGINEERED TO PERFECTION. Booya! Add a bit of style and function to your engine bay with this simple but elegant and first of it's kind pulley cove...

NOTE: Fitment is for 2010-2012 ONLY Do you know what your intake manifold sits on?...a superheated engine. If you don't know already, the cooler yo...

Now supporting the Evo community with the same top quality gaskets we have been offering Subaru owners for years! Mitsubishi Evolution X Intake Man...

Better Flow, More Power! At GrimmSpeed we know that not everyone is ready for one of our full aftermarket intake systems, but still wants a safe an...

OEM Splitter choking your TMIC? Fix that. Tired of popping your hood only to have that ugly OEM Splitter remind you of how badly it deprives your f...

SEAL the deal with a set of GrimmSpeed EJ25 Head Gaskets! GrimmSpeed has set the standard for quality when it comes to aftermarket replacement gask...

Looking for something extra to spruce up your engine bay? Clean up that engine bay and show your GrimmSpeed pride with our newly-designed Subaru Ba...

The shrouds you didn’t know you needed!   The original GrimmSpeed Fender Shrouds for the 15+ chassis were SUCH a big hit that we decided to introdu...

Spruce up your engine bay and make it stand out! At GrimmSpeed, we pride ourselves in the design of our aesthetic pieces just as much as our per...

3 PROBLEMS. 1 SOLUTION. How many times have you lost a wrench or socket in your engine bay? Yeah, that's what I thought, too many to count. Finall...

3 problems. 1 clever solution. Innovative Integrated Tool Tray! Keeps Radiator Running Cooler(directs air through radiator) Built In Radiator S...

Upgrade that ugly yellow OEM plastic oil cap! Kick out your old oil cap and tell it to hit the streets, we have a sleeker, much more attractive ver...

Your factory crank pulley is responsible for transferring energy from your crankshaft to your water pump, a/c compressor and alternator. It does th...

Welcome to the most refined manual boost controller available on the market today. During development, we worked hand in hand with tuners across th...

If you upgrade your Subaru to a Blow-Through System you will need a way to block off the location where the old MAF Sensor was. The GrimmSpeed M...

Your Subaru’s cooling system is only as good as its weakest link, commonly that’s the old, dry-rotted OEM coolant hoses. As your Subaru ages and th...

  In response to the demand to extend our Phenolic Spacer lineup to include some of the older subaru models, we now have created intake manifold t...