GrimmSpeed

A Proper Fit Starts Here Getting your wheel fitment right shouldn't mean compromising reliability. GrimmSpeed Hub-Centric Wheel Spacer Kits are b...

EMISSIONS SEMA Certified - SC -GRM01-0145 for listed fitments CARB Certified - EO - #D-896 for listed fitments A top of the line Up-Pipe built to ...

A Proper Fit Starts Here Getting your wheel fitment right shouldn't mean compromising reliability. GrimmSpeed Hub-Centric Wheel Spacer Kits are b...

A Proper Fit Starts Here Getting your wheel fitment right shouldn't mean compromising reliability. GrimmSpeed Hub-Centric Wheel Spacer Kits are b...

A perfect solution to pesky problems - it's what you expect from GrimmSpeed! Exhaust leaks seem to be an all-too-common issue with most modded Suba...

This dry element intake filter is dimensionally identical to the oiled air filters that are included with the GrimmSpeed WRX/STI/BRZ/FRS/LGT Intake...

THE ORIGINAL DIRECT-FIT BCS FOR TURBO SUBARUS. GrimmSpeed is proud to provide the most complete and easy to use 3-Port Electronic Boost Solenoid fo...

THE ORIGINAL DIRECT-FIT BCS FOR TURBO SUBARUS. GrimmSpeed is proud to provide the most complete and easy to use 3-Port Electronic Boost Solenoid fo...

THE ORIGINAL DIRECT-FIT BCS FOR TURBO SUBARUS GrimmSpeed is proud to provide the most complete and easy to use 3-Port Electronic Boost Solenoid for...

The Original Direct-Fit BCS for turbo Subarus. GrimmSpeed is proud to provide the most complete and easy to use 3-Port Electronic Boost Solenoid fo...

DESCRIPTION The GrimSpeed Electronic Boost Control Solenoid is one of GrimmSpeed's most utilized upgrades due to the durability, simplicity of use,...

Do you know what your intake manifold sits on?...a superheated boxer engine. If you don't know already, the cooler your intake air is the more HP y...

The stock single-piston caliper found on most Subaru platforms gets the job done — but it wasn’t designed for the kind of aggressive driving, track...

The stock single-piston caliper found on most Subaru platforms gets the job done — but it wasn’t designed for the kind of aggressive driving, track...

The GrimmSpeed 6-Speed STI Shifter Bushing Kit replaces the factory rubber shifter bushings with higher durability polyurethane components designed...

DESCRIPTION Do you know what your intake manifold sits on?...a superheated boxer engine. If you don't know already, the cooler your intake air is t...

Bolt-On Fitment. Serious Power.  More power shouldn't mean tearing apart your engine bay. Meet the GrimmSpeed BB450+, engineered to deliver substan...

Bolt-On Fitment. Serious Power.  More power shouldn't mean tearing apart your engine bay. Meet the GrimmSpeed BB450+, engineered to deliver substan...

DESCRIPTION The GrimmSpeed Air/Oil Separator for turbocharged Subaru models has a unique design that allows you to maintain your PCV Valve while se...

DESCRIPTION The GrimmSpeed Air/Oil Separator for turbocharged Subaru models has a unique design that allows you to maintain your PCV Valve while se...

DESCRIPTION Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what ...

IMPROVE PEDAL FEEL AND BRAKING CAPABILITIES Pressing Subaru brakes leaves a lot to be desired, especially when every inch counts in a race or when ...

IMPROVE PEDAL FEEL AND BRAKING CAPABILITIES! Pressing Subaru brakes leaves a lot to be desired, especially when every inch counts in a race or when...

EMISSIONS CARB Certified - EO - #D-896-3 for listed fitments The GrimmSpeed Charge Pipe Kit replaces the restrictive stock plastic unit on the FA2...