GrimmSpeed

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 ...

Aftermarket exhaust systems are often of a larger tubing diameter than factory systems and as a result, are a tighter fit below your car. With fac...

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

The Original Direct-Fit BCS for turbo Subarus. GrimmSpeed is proud to provide the most complete and easy to use 3-Port Electronic Boost Solenoid fo...

Will not fit NZ plates

The GrimmSpeed Charge Pipe Kit replaces the restrictive stock plastic unit on the FA20-powered WRX with larger diameter CNC mandrel bent aluminum ...

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. ...

Introduction This dry element intake filter is dimensionally identical to the oiled air filters that are included with the GrimmSpeed WRX/STI/BRZ/F...

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...

Ask and You Shall Receive. We have had a TON of requests from people to start selling our new-style windshield banner online, so here they are i...

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...

The OEM Subaru crank pulley has been a cause for concern ever since its original design. It is extremely heavy, susceptible to catastrophic failure...

The bar has been raised. So, you probably already know that you want an intercooler with maximum cooling and minimum restriction, but when it come...

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'...

The turbo to o2 housing seal is absolutely critical on Evo models. This gasket is known to create leaking issues that can be a bear to track down a...

The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were designed and tested to work well together as a compl...

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...

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...

The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were designed and tested to work well together as a compl...

Our new 2X Thick 3" 2-Bolt gasket is hands down the most beefy 3" 2-Bolt gasket on the market. 12 LAYERS!Tired of the endless searching for a 3" 2 ...

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...

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...

Adding a well-design, well-built aftermarket up pipe is one of the first things you should do to your Subaru. Our ultimate goal was to make the be...

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

The Original Direct-Fit BCS for turbo Subarus. GrimmSpeed is proud to provide the most complete and easy to use 3-Port Electronic Boost Solenoid fo...

Tired of the endless searching for a 3" 2 Bolt premium gasket that doesn't blow out? Most aftermarket Subaru exhaust systems need a 3" 2 bolt gaske...

Bolt-On Fitment. Big Power. More horsepower. More top-end performance. No need to tear apart your engine bay. Meet the GrimmSpeed BB550+, engineere...

Bolt-On Fitment. Serious Power.  More power shouldn't mean tearing apart your engine bay. Meet the GrimmSpeed BB450+, engineered to deliver substan...

A Return to Form, RefinedThe GrimmSpeed Gentleman’s Exhaust returns with a redesigned Version 2 layout focused on fitment, longevity, and maintaini...

A Return to Form, RefinedThe GrimmSpeed Gentleman’s Exhaust is back, now redesigned to improve installation, dial in fitment, and maintain the refi...

The days of sacrificing performance to leaky BPVs are over, because the long-awaited GrimmSpeed Bypass Valves are here!The long-awaited return of t...

Part Number: 113026Over the years, GrimmSpeed Engineers have proven that we are capable of manufacturing the highest quality, best performing exhau...

Lock Down Your Drivetrain for More Predictable Shifting!The GrimmSpeed Subaru Engine Mount Kit offers a game changing upgrade for Subaru WRX owners...

Lock Down Your Drivetrain for More Predictable Shifting!The GrimmSpeed Subaru Engine Mount Kit offers a game changing upgrade for Subaru WRX owners...

1/2"+ Thick Flanges, 14 Gauge Tubing, TRIPLE Layer Flex Joint. We are DURABILITY.Subaru supplies its turbo owners with a tiny little crosspipe from...

Part Number: 077044Kill that exhaust leak for GOOD!GrimmSpeed Subaru 3 in. Downpipe AdpaterFlared Adapter Transition! (Creates a smooth transition ...

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...

GrimmSpeed Subaru Front Mount Intercooler "STI-Style" Turbo Outlet Hose 08-14 WRX Adapt your GrimmSpeed 2008-14 WRX Front Mount Intercooler for ...

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

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...