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: 057033 The GrimmSpeed Mitsubishi EVO Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will ...

Part Number: 057019 The GrimmSpeed Mitsubishi EVO Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will ...

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: 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: 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: 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: 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...

Part Number: 077046 Exhaust leaks seem to be an all-too-common issue with most modded Subarus. They tend to spring up out of nowhere and cause hour...

Part Number: 090109 These 5-ply silicone couplers are fiber reinforced to prevent distortion in high boost scenarios but offer mobility and flexibi...

Part Number: Gasket-024001 An amazing 7 LAYERS! GrimmSpeed™ OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed™ we have worked...

Part Number: 7619 . High quality heat-treated SAE 4140 alloy steel . Excellent tensile strength . Eliminate wheel/tyre rubbing instantly . More agg...

Part Number: 6756 Rear traction rod made of unique high density steel, provide excellent stability during high speed driving or hard cornering . Ma...