Grimmspeed

It's no secret that GrimmSpeed intakes feature performance and aesthetics that lead the pack. With years of design theories and knowledge gained from their successful intake program, GS has developed...

It's no secret that GrimmSpeed intakes feature performance and aesthetics that lead the pack. With years of design theories and knowledge gained from their successful intake program, GS has developed...

GrimmSpeed for years has silently worked to create a cold air intake solution that sets itself apart from the rest. GS examined and tested current offerings, and identified their shortcomings...

GrimmSpeed for years has silently worked to create a cold air intake solution that sets itself apart from the rest. GS examined and tested current offerings, and identified their shortcomings...

Real 10whp gains in 30min with no tuning.Design requirements for this intake were simple: The intake must not only be safe for the engine but perform well both with and without tuning. The intake...

Real 10whp gains in 30min with no tuning.Design requirements for this intake were simple: The intake must not only be safe for the engine but perform well both with and without tuning. The intake...

You've been asking for this bad sally for a while and it's finally here. The GrimmSpeed intake for the 15-18 STI can be thought of as a hybrid of the tube and filter used in the 2008-14 WRX intake...

You've been asking for this bad sally for a while and it's finally here. The GrimmSpeed intake for the 15+ STI can be thought of as a hybrid of the tube and filter used in the 2008-14 WRX intake and...

GrimmSpeed's inspiration for the StealthBox Intake came from their internal discussions about what they wanted from an intake system for the 2015+ WRX. Of course, performance is the highest priority,...

GrimmSpeed's inspiration for the StealthBox Intake came from their internal discussions about what they wanted from an intake system for the 2015+ WRX. Of course, performance is the highest priority,...

GrimmSpeed brings you another innovative product, a first of its kind "Cool Touch" Delrin Oil Cap that fits all Subaru engines. No more burning an imprint of your oil cap onto your hand! Kick out...

Tired of the endless searching for a 3" 2 Bolt premium gasket that doesn't blow out? Most aftermarket Subaru exhaust systems need a 3" 2 bolt gasket, however, a quality 3" 2 bolt style gasket is...

125% Thicker than OEM Gaskets!! GrimmSpeeds new 2X Thick 3" 2-Bolt gasket is hands down the most beefy 3" 2-Bolt gasket on the market. 12 LAYER! Tired of the endless searching for a 3" 2 Bolt...

FINALLY you have an option for an extra thick Exhaust Manifold to Up Pipe Gasket. The most troublesome mating joint in the Subaru exhaust track is the manifold to up pipe connection. More than 2x...

GrimmSpeed's 3 bolt multi-Layer stainless steel Subaru manifold to uppipe gasket features oem quality at a reduced price. The premium gasket is 22% thicker than OEM and features a 304 stainless steel...

The GrimmSpeed Catted J-Pipe for the 2015-20 Subaru WRX 6 Speed Manual Transmission is constructed from (1) mandrel bent 3" 304 stainless steel pipe. The pipe has a smooth 3.5" to 3" transition that...

This downpipe adapter is the perfect solution to the problem of matching a 3" aftermarket downpipe to a cat back system that uses the stock 2.5" taper. The 3" downpipe adapter plate allows you to...

A full External Wastegate (EWG) set-up consists of a EWG up-pipe and a wastegate. The EWG set-up creates better turbo spool because it can utilize the exhaust gas more efficiently; however, the full...

GrimmSpeed 3mm Phenolic Thermal Spacers. 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 your car...

A full External Wastegate (EWG) set-up consists of a EWG up-pipe and a wastegate. The EWG set-up creates better turbo spool because it can utilize the exhaust gas more efficiently; however, the full...

GrimmSpeed 8mm Phenolic Thermal Spacers. 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 your car...

The internal wastegate (IWG) bracket is used in place of the stock wastegate actuator when moving to an external wastegate setup. In previous years, turbo owners had to weld the IWG shut on their...

GrimmSpeed Battery Tie Down. Made from 6061 aluminum this battery tie down features a piston design at opposing ends with a anodized matte finish. Fits 2002-2014 Subaru WRX, 2004-2014 Subaru STI,...

GrimmSpeed has designed a simple CAD modeled boost control adapter that utilizes the OEM WRX and Legacy GT turbo inlet. The billet adapter makes use of the inlets recirculation port and features a...

GrimmSpeed has provided a trusted 3-port EBCS (electronic boost control solenoid valve) solution for years that many Subaru tuners prefer. The 2015 - 20 Subaru WRX comes from the factory with a...

GrimmSpeed Subaru Boost Solenoid Valve For 2002-05 Subaru WRX. The Most COMPLETE Subaru EBCS Ever Built, Period. Get into Boost Much Quicker, Flows 10% more than most of the competition. Plug and...

GrimmSpeed Subaru Boost Solenoid Valve For 2006-07 Subaru WRX, 2004-07 STI and 2004-08 Forester XT . The Most COMPLETE Subaru EBCS Ever Built, Period. Get into Boost Much Quicker, Flows 10% more than...

GrimmSpeed Subaru Boost Solenoid Valve For 2008-14 Subaru WRX and 05-12 Legacy GT. The Most COMPLETE Subaru EBCS Ever Built, Period. Get into Boost Much Quicker, Flows 10% more than most of the...

GrimmSpeed Subaru Boost Solenoid Valve For 2008-20 Subaru STI. The most, complete Subaru EBCS Ever Built, Period. Get into Boost Much Quicker, Flows 10% more than most of the competition. Plug and...

GrimmSpeed has provided a trusted 3-port EBCS (electronic boost control solenoid valve) solution for years that many Subaru tuners prefer. The 2015 - 20 Subaru WRX comes from the factory with a...