Black Friday Sale 2023

Designed to cope with the brutal conditions of extreme exhaust temperatures, GFB Wastegates features not only a huge flow capacity, but also a comp...

Designed to cope with the brutal conditions of extreme exhaust temperatures, GFB Wastegates features not only a huge flow capacity, but also a comp...

The VTA is a performance blow-off valve solution for Audi, VW, Skoda and SEAT vehicles with an electronic factory diverter valve. If you want sou...

You asked, we delivered. Many times we have been asked for a replacement trumpet that gives a different sound, and here it is. The ability to c...

Goodridge Premium Performance Brake Lines for for Honda Integra DC2 1.8 Type R .Superior to OEM brake lines, Goodridge Premium Performance Brake Li...

Goodridge Premium Performance Brake Lines for for Honda Prelude S 1988-1990.Superior to OEM brake lines, Goodridge Premium Performance Brake Lines ...

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

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

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