GrimmSpeed

Part Number: 099031 Booya! Add a bit of style and function to your engine bay with this simple but elegant and first of it's kind pulley cover, fea...

Part Number: 090108 These 5-ply silicone couplers are fiber reinforced to prevent distortion in high boost scenarios but offer mobility and flexibi...

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: 057002 GrimmSpeed is proud to provide the most complete and easy to use 3-Port Electronic Boost Solenoid for available for all turbo S...

Part Number: 096032 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: 070002 Welcome to the most refined manual boost controller available on the market today. During development, we worked hand in hand w...

Part Number: 010019 The internal wastegate(IWG) bracket is used in place of the stock wastegate actuator when moving to an external wastegate setup...

Part Number: 095015R In our opinion, the OEM Subaru crank pulley has been a cause for concern ever since its original design. It is relatively heav...

Part Number: 008008 A full External Wastegate (EWG) set-up consists of a EWG up-pipe and a wastegate. The EWG set-up creates better turbo spool bec...

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

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: 057041 If you've been in the Subaru game for long, you're probably well aware that a 3-port Boost Control Solenoid (BCS) is considered...

Part Number: 090027 You probably already know that you want an intercooler with maximum cooling and minimum restriction, but when it comes to selec...

Part Number: 096059 If you’ve never taken a look at the huge gap between the inside of your front fenders and frame, be prepared to be disappointed...

Part Number: 096058 If you’ve never taken a look at the huge gap between the inside of your front fenders and frame, be prepared to be disappointed...

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: 122005 The factory pitch stop mount is often overlooked and leaves a lot of room for improvement, both in performance and aesthetics. ...

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: 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: 038007 Each knob is machined from Delrin/Duracon, an extremely durable thermoplastic, right here in Minnesota. Each knob weighs 120g, ...

Part Number: 038006 Each knob is machined from solid 304 stainless steel rod right here in Minnesota and weighs in at 675g. Each shift knob also re...

Part Number: 057027 The GrimmSpeed™ MazdaSpeed 6 Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will n...

Part Number: 007103 With the 2015 J-Pipe, the devil is truly in the details and the product development team here at GrimmSpeed has taken the time ...

Part Number: 096005 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: 099050 Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has ju...

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: 099051 Tired of being teased for your boring engine bay? Replace your stock TMIC with one that doesn't facilitate the use of the stock...

Part Number: 113008 Over the years, GrimmSpeed has proven that our exhaust products are some of the highest-quality and best-performing in the indu...