Black Friday Sale 2023

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

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: 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: 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: 095011 The long awaited answer to the antique Subaru pulley removal tool, bolts stuck through boards, and random screws welded to bars...

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

Part Number: Gasket-076001 100% Thicker than OEM Gaskets!! Our new 2X Thick 3" 2-Bolt gasket is hands down the most beefy 3" 2-Bolt gasket on the m...

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: 057032 GrimmSpeed is proud to provide the most complete and easy to use 3-Port Electronic Boost Solenoid for available for all turbo S...

Part Num: 057028 The MOST COMPLETE AND BEST PERFORMING MazdaSpeed BCS Ever Built, Period. Get into Boost Much Quicker (Flows 10% more than competit...

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...

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: Gasket-027001 GrimmSpeed™ OEM Style Gasket, OEM quality without the high OEM price. FINALLY you have an option for an extra thick Exha...

Part Number: 040005 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: 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: 001001 Subaru supplies its turbo owners with a tiny little crosspipe from the factory. 50% of your exhaust gasses are passing through ...

Part Number: Gasket-023001 GrimmSpeed™ does it again! Introducting our enlarged bore Intake Manifold to TGV gaskets. Why do you want the enlarged b...

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