WRX/STI Version 1-11

Part Number: ATI-CLUST-25EJ-05 What makes the ATI Triple Meter Dash Pod an excellent interior enhancement, is how it matches your factory dash so w...

BLOX Racing is proud to introduce the most effective solution for a shaky car - all new Pitch Stop Mount. Why do you need a new pitch stop mount if...

Part Number: 515150 The COBB Titanium Cat-Back Exhaust is un-matched in build quality, style, and performance. Utilizing Grade 4 titanium tubing, t...

Part Number: C4587-032 The leak stops here! Cometic MLX head gaskets feature a unique integrated "stopper" layer for optimum combustion chamber sea...

Part Number: 7718.320 Performance Tuned Handling. Further Reduce Body Roll. Precision Engineered for PRO-KIT & SPORTLINE Performance Lowering S...

1Part Number: Gasket-034001 Rejoice 3-Bolt Up Pipe owners, you finally have a great replacement gasket for your up pipes! We listened to your wants...

Part Number: 040004 Have you ever thought to yourself, ""Man, Trent, you've got all of these awesome parts but how are you supposed to let your cre...

Part Number: 070033 With so many catback options available, our goal was to create a unique, refined sound in an extremely high quality system. We'...

Part Number: 060074 It’s no secret that GrimmSpeed intakes feature performance and aesthetics that lead the pack. With years of design theories and...

Part Number: 060092 At GrimmSpeed we know that not everyone is ready for one of our full aftermarket intake systems, but still wants a safe and eas...

Part Number: 060060 Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake system for the 2015+ W...

Part Number: 060071 For years you've been asking us for intakes, and for years we've silently worked to create a solution that sets itself apart fr...

Part Number: 060067 Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake system for the 2015+ W...

Part Number: 060091 At GrimmSpeed we know that not everyone is ready for one of our full aftermarket intake systems, but still wants a safe and eas...

Part Number: 060052 Design requirements for this intake were simple: The intake must not only be safe for the engine, but perform well both with an...

Part Number: 060077 You've been asking for this bad sally for a while and it's finally here. The intake the for the 15+ STI can be thought of as a ...

Part Number: 060078 You've been asking for this bad sally for a while and it's finally here. The intake the for the 15+ STI can be thought of as a ...

Part Number: 060072 For years you've been asking us for intakes, and for years we've silently worked to create a solution that sets itself apart fr...

Part Number: 060094 At GrimmSpeed we know that not everyone is ready for one of our full aftermarket intake systems, but still wants a safe and eas...

Part Number: 060089 At GrimmSpeed we know that not everyone is ready for one of our full aftermarket intake systems, but still wants a safe and eas...

Part Number: 060093 At GrimmSpeed we know that not everyone is ready for one of our full aftermarket intake systems, but still wants a safe and eas...

Part Number: 007082 A downpipe is one of the first modifications that should be done on your car, as the OEM downpipe contains two very restrictive...

Part Number: 040026 When it comes to wiring the Hella Horns that are mounted to your beautiful GrimmSpeed BroTie, we have you covered. After some t...

Part Number: 053001 When you upgrade your Subaru to a Blow Through System you will need a way to block off the location where the old MAF Sensor wa...

Part Number: 019001 Do you know what your intake manifold sits on?...a superheated boxer engine. If you don't know already, the cooler your intake ...

Part Number: 125009 Some OE parts look passable and others miss the mark. In the case of the factory post MAF hose, the quicker you can get it out ...

Part Number: 096008 How many times have you lost a wrench or socket in your engine bay? Yeah, that's what I thought, too many to count. Finally aft...

Part Number: 096009 How many times have you lost a wrench or socket in your engine bay? Yeah, that's what I thought, too many to count. Finally aft...

Part Number: 096006 How many times have you lost a wrench or socket in your engine bay? Yeah, that's what I thought, too many to count. Finally aft...

Part Number: 096039 At GrimmSpeed we pride ourselves in the design of our aesthetic pieces just as much as our performance parts. The brand new Gri...

Part Number: 096042 At GrimmSpeed we pride ourselves in the design of our aesthetic pieces just as much as our performance parts. The brand new Gri...

Part Number: 096048 Do away with the flimsy, boring factory fabric shrouds and make your engine bay stand out with the BRAND NEW GrimmSpeed Fender ...