select level 1
select level 2
select level 3

Grimmspeed 2.25" / 2.5" Universal Exhaust Gasket

$23.00
020031
All Best selling products Commerceinstruments Best Selling Products Exhausts Grimmspeed New products
If you've dealt with sourcing exhaust gaskets before, you know that there are a lot of different options at a lot of different price...

GrimmSpeed 3 Port Electronic Boost Control Solenoid - Subaru WRX 2002-2005

$129.00
057001
All Best selling products Boost Control Solenoids Commerceinstruments Best Selling Products Electronics Forced Induction Grimmspeed New products
The GrimmSpeed Electronic Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your...

GrimmSpeed 3" Catted Downpipe - Subaru WRX 2008-2014 / STi 2008-2020 (+Multiple Fitments)

$739.00
007091
All Best selling products Commerceinstruments Best Selling Products Downpipes Grimmspeed New products
You are looking at a top-of-the-line fully USA built Grimmspeed Downpipe. All materials, engineering, R&D, fabrication, etc are straight out of the USA. The tubing is...

GrimmSpeed 3-Port Electronic Boost Control Solenoid - Mazda Mazdaspeed 6 2006-2007

$129.00
057027
All Best selling products Boost Control Solenoids Commerceinstruments Best Selling Products Electronics Forced Induction Grimmspeed New products
The GrimmSpeed Electronic Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your...

GrimmSpeed 3-Port Electronic Boost Control Solenoid - Mitsubishi EVO X 2008-2015

$129.00
057033
All Best selling products Boost Control Solenoids Commerceinstruments Best Selling Products Electronics Forced Induction Grimmspeed New products
The GrimmSpeed Electronic Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your...

GrimmSpeed 3-Port Electronic Boost Control Solenoid - Subaru WRX 2008-2014 / Legacy GT 2005-2009

$129.00
057032
All Best selling products Boost Control Solenoids Commerceinstruments Best Selling Products Electronics Forced Induction Grimmspeed New products
The GrimmSpeed Electronic Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your...

GrimmSpeed 38mm External Wastegate 2-Bolt Gasket

$13.00
021001
All Best selling products Commerceinstruments Best Selling Products Exhausts Grimmspeed New products
GrimmSpeed Universal 38mm External Wastegate Gasket*Pictures used for marketing purposes only, actual product may vary 

GrimmSpeed Adjustable Wastegate (IWG) Bracket - Universal

$39.00
010019
All Best selling products Commerceinstruments Best Selling Products Grimmspeed New products Wastegates & Accessories
No More Welding Turbos! Fully Adjustable Rod Design For Most Subaru OEM/Aftermarket Turbos! Stainless Steel Construction Laser Engraved GrimmSpeed Logo Simple and Attractive Allen...

GrimmSpeed Air Oil Separator - Subaru WRX 2002-2007 / STi 2004-2020

$299.00
078006
Air Oil Separators All Best selling products Commerceinstruments Best Selling Products Grimmspeed New products Oil System
An Air/Oil Separator has one job, remove the oil from the engine ventilation system so the oil does not get sent through the intake...

GrimmSpeed Air Oil Separator - Subaru WRX 2008-2014 / Legacy GT 2005-2009

$299.00
078016
Air Oil Separators All Best selling products Commerceinstruments Best Selling Products Grimmspeed New products Oil System
An Air/Oil Separator has one job, remove the oil from the engine ventilation system so the oil does not get sent through the intake...

GrimmSpeed Alternator Cover - Subaru WRX 2002-2014 / STi 2004-2020 (+Multiple Fitments)

$89.00
099012
All Alternator Covers Belt Covers Best selling products Commerceinstruments Best Selling Products Engine Covers Grimmspeed New products
Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what you need....

GrimmSpeed Aluminum Charge Pipe Kit - Subaru WRX 2015-2020

$295.00
090113
All Best selling products Commerceinstruments Best Selling Products Cooling Grimmspeed Intercooler Piping Kits New products
The Grimmspeed Top Mount Intercooler Charge Pipe Kit has been designed to replace the factory plastic pipes on the factory top mount intercooler. These...

GrimmSpeed Aluminum Turbo Inlet - Subaru WRX 2015-2021

$199.00
125027
All Best selling products Commerceinstruments Best Selling Products Grimmspeed New products
Item is frequently sold out, please contact us for lead time before ordering. One of the biggest complaints from 2015-21 WRX owners has to...

GrimmSpeed APS Downpipe 3-Bolt Gasket

$21.00
033001
All Best selling products Commerceinstruments Best Selling Products Exhausts Grimmspeed New products
APS Downpipe to 3-Bolt Gasket *Pictures used for marketing purposes only, actual product may vary 

GrimmSpeed Battery Tie Down - Multiple Subaru Fitments

$58.00
121003
All Best selling products Commerceinstruments Best Selling Products Engine Dress Up Grimmspeed New products
Clean up that engine bay and show your boxer pride with our new Battery Tie Down. We started out with a block of 6061...

GrimmSpeed Boost Control Solenoid - Subaru WRX FA20 2015-2020 (Solenoid Only)

$129.00
057046
All Best selling products Boost Control Solenoids Commerceinstruments Best Selling Products Electronics Forced Induction Grimmspeed New products
The GrimmSpeed Electronic Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your...

GrimmSpeed Boost Control Solenoid Adapter - Subaru WRX 2015-2020

$39.00
057047
All Best selling products Boost Control Solenoids Commerceinstruments Best Selling Products Electronics Forced Induction Grimmspeed New products
The GrimmSpeed Electronic Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your...

GrimmSpeed Bottle Opener Keychain

$8.00
111005
All Best selling products Brand Accessories Commerceinstruments Best Selling Products Grimmspeed New products
GrimmSpeed Bottle Opener Keychain*Pictures used for marketing purposes only, actual product may vary in appearance / style.

GrimmSpeed BroTie Mounting Bracket for Hella Horns - Subaru WRX / STI 2002+

$45.00
040004
All Best selling products Commerceinstruments Best Selling Products Exterior Misc. Grimmspeed Horns & Accessories New products
Grimmspeed engineers overlaid 3D scans of GD, GR and VA chassis core support in CAD. From there, a unique design was created that allows the...

Grimmspeed Bypass Valve - Subaru STi 2004-2021

$229.00
126024.1
All Best selling products Blow Off Valves & Accessories Commerceinstruments Best Selling Products Forced Induction Grimmspeed New products
The days of sacrificing performance to leaky BPVs are over, because the long-awaited GrimmSpeed Bypass Valves are here! The long-awaited GrimmSpeed Bypass Valves are here! Our...

GrimmSpeed Catted Downpipe 3" - Subaru WRX 2002-2007 / STi 2004-2007 / Forester XT 2004-2008

$739.00
007082
All Best selling products Commerceinstruments Best Selling Products Downpipes Grimmspeed New products
A downpipe is one of the first modifications that should be done on your car, as the OEM downpipe contains two very restrictive catalytic...

GrimmSpeed Catted J-Pipe 3" - Subaru WRX 2015-2020 (6MT)

$829.00
007103
All Best selling products Commerceinstruments Best Selling Products Downpipes Grimmspeed New products
With the 2015 J-Pipe, the devil is truly in the details and the product development team here at GrimmSpeed has taken the time necessary...

Grimmspeed Chase JB400 Turbocharger - Subaru STi 2004-2021 / WRX 2002-2007 (+Multiple Fitments)

$1,350.00
123005
All Best selling products Commerceinstruments Best Selling Products Grimmspeed New products Turbo Kits Turbochargers / Turbo Kits
Both of Grimmspeed's new turbocharger options feature state of the art proprietary compressors, turbines, CHRA's and wheel designs which maximize the power made on your EJ engine at...

GrimmSpeed Cherry Blossom Red(STi Pink) Paint

$20.00
054003
All Best selling products Commerceinstruments Best Selling Products Grimmspeed New products Paint & Glass Cleaner Vehicle Care Vehicle Protection
GrimmSpeed Cherry Blossom Paint  *Pictures used for marketing purposes only, actual product may vary

GrimmSpeed Cold Air Intake - Subaru BRZ 2013-2020 / Scion FR-S 2013-2016 / Toyota 86 2017-2020

$359.00
060052
Air Induction Air Intake Systems All Best selling products Commerceinstruments Best Selling Products Grimmspeed New products
Grimmspeed's Design requirements for this intake were simple: The intake must not only be safe for the engine, but perform well both with and...

GrimmSpeed Cold Air Intake - Subaru Legacy GT 2005-2009 / Outback XT 2005-2009

$349.00
060071
Air Induction Air Intake Systems All Best selling products Commerceinstruments Best Selling Products Grimmspeed New products
Grimmspeed's Design requirements for this intake were simple: The intake must not only be safe for the engine, but perform well both with and...

GrimmSpeed Cold Air Intake - Subaru WRX / STi 2008-2014 / Forester XT 2009-2013

$349.00
060051
Air Induction Air Intake Systems All Best selling products Commerceinstruments Best Selling Products Grimmspeed New products
Grimmspeed's Design requirements for this intake were simple: The intake must not only be safe for the engine, but perform well both with and...

GrimmSpeed Crank Pulley Removal / Install Tool

$55.00
095011
All Best selling products Commerceinstruments Best Selling Products Engine Component Tools Grimmspeed New products Specialty Tools
Grimmspeed Crank Pulley Removal/Install Tool The long awaited answer to the antique Subaru pulley removal tool, bolts stuck through boards, and random screws welded...

GrimmSpeed Downpipe 3" Catted LIMITED - Subaru WRX 2008-2014 / STi 2008-2020 (+Multiple Fitments)

$759.00
007097
All Best selling products Commerceinstruments Best Selling Products Downpipes Grimmspeed New products
The Grimmspeed Limited Divorced and Catted Downpipe is a top-of-the-line fully USA built downpipe. All materials, engineering, R&D, fabrication, etc are straight out of...

GrimmSpeed Downpipe 3" Catted LIMITED w/ Black Ceramic Coating - Subaru WRX 2008-2014 / STi 2008-2020 (+Multiple Fitments)

$859.00
007098
All Best selling products Commerceinstruments Best Selling Products Downpipes Grimmspeed New products
The Grimmspeed Limited Divorced and Catted Downpipe is a top-of-the-line fully USA built downpipe. All materials, engineering, R&D, fabrication, etc are straight out of the USA. The tubing...
Items 1 to 30 of 157 total
All products sold by Patterson Performance Parts, LLC are intended for off-road and/or competition use only. By purchasing aftermarket products from us, having us install the products, or both, the customer takes full responsibility for any use, and/or misuse of the product; and agrees that Patterson Performance Parts holds no responsibility for any consequences, legal, or other, of such use and/or misuse.
×

Someone recently bought a

The cookie settings on this website are set to 'allow all cookies' to give you the very best experience. Please click Accept Cookies to continue to use the site.

Your cart

×