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    GrimmSpeed Performance Parts for WRX, STI & More

    306 Results

    GrimmSpeed 3in Downpipe to Stock Cat-Back Adapter - Subaru Turbo Models (inc. 2015-2021 WRX / STI)

    100 In Stock

    077044

    GrimmSpeed 3in Downpipe to Stock Cat-Back Adapter - Subaru Turbo Models (inc. 2015-2021 WRX / STI)

    4.8(57)
    $60.00
    GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI / 2002-2007 WRX

    47 In Stock

    126032RED

    GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI / 2002-2007 WRX

    5.0(2)
    $259.00
    GrimmSpeed Stubby Shift Knob - Stainless Steel Black - M12x1.25 - Manual Subaru/Ford

    59 In Stock

    380002

    GrimmSpeed Stubby Shift Knob - Stainless Steel Black - M12x1.25 - Manual Subaru/Ford

    $73.00
    Grimmspeed Front Mount Intercooler Kit Black Core w/ Red Piping - 2008-2014 Subaru WRX / STI

    25 In Stock

    090253

    Grimmspeed Front Mount Intercooler Kit Black Core w/ Red Piping - 2008-2014 Subaru WRX / STI

    $1,749.00
    GrimmSpeed Alternator Cover (Red) - 2002-2014 Subaru WRX / 2004-2021 STI / 2004-2013 Forester XT / 2005-2009 Legacy GT / Outback XT

    1 In Stock

    099017

    GrimmSpeed Alternator Cover (Red) - 2002-2014 Subaru WRX / 2004-2021 STI / 2004-2013 Forester XT / 2005-2009 Legacy GT / Outback XT

    $94.00
    GrimmSpeed 4-Piston Brake Caliper Kit (340mm Rotor) - Gunmetal Gray - 2022-2025 Subaru WRX (VB)

    GRM113422.1118.1.0.GRAY-KIT

    GrimmSpeed 4-Piston Brake Caliper Kit (340mm Rotor) - Gunmetal Gray - 2022-2025 Subaru WRX (VB)

    $1,299.00
    GrimmSpeed Sound Generator Plug Kit Red - 2015-2017 Subaru STI

    17 In Stock

    125016

    GrimmSpeed Sound Generator Plug Kit Red - 2015-2017 Subaru STI

    $37.00
    GrimmSpeed Top Mount Intercooler Service Kit - 2008-2014 Subaru WRX / 2005-2009 Legacy GT

    GRM113420

    GrimmSpeed Top Mount Intercooler Service Kit - 2008-2014 Subaru WRX / 2005-2009 Legacy GT

    $129.00
    GrimmSpeed 4-Piston Brake Caliper Kit (340mm Rotor) - Gunmetal Gray - 2013-2025 Scion FR-S / Subaru BRZ / Toyota GR86

    GRM113421.1113.1.0.GRAY-KIT

    GrimmSpeed 4-Piston Brake Caliper Kit (340mm Rotor) - Gunmetal Gray - 2013-2025 Scion FR-S / Subaru BRZ / Toyota GR86

    $1,299.00
    Grimmspeed Manifold to Uppipe Double Thickness Gasket - Subaru Turbo Models

    100 In Stock

    027001

    Grimmspeed Manifold to Uppipe Double Thickness Gasket - Subaru Turbo Models

    5.0(16)
    $25.00
    Grimmspeed Turbo Heat Shield V2 w/ Black Ceramic Coating - Subaru Turbo Models

    55 In Stock

    092008

    Grimmspeed Turbo Heat Shield V2 w/ Black Ceramic Coating - Subaru Turbo Models

    4.8(4)
    $104.00
    GrimmSpeed Strut Tower Brace Red - 2013-2021 Scion FR-S / Subaru BRZ / Toyota 86

    40 In Stock

    098009

    GrimmSpeed Strut Tower Brace Red - 2013-2021 Scion FR-S / Subaru BRZ / Toyota 86

    $147.00
    GrimmSpeed Radiator Shroud w/ Tool Tray Red - 2008-2014 Subaru WRX/STI

    14 In Stock

    096009

    GrimmSpeed Radiator Shroud w/ Tool Tray Red - 2008-2014 Subaru WRX/STI

    $73.00
    GrimmSpeed Touch Up Paint Clear - Universal

    46 In Stock

    054005

    GrimmSpeed Touch Up Paint Clear - Universal

    4.0(1)
    $20.00
    GrimmSpeed Bypass Valve BLACK - 2015-2021 Subaru WRX

    126033BLK

    GrimmSpeed Bypass Valve BLACK - 2015-2021 Subaru WRX

    5.0(1)
    $259.00
    GrimmSpeed Post MAF Hose Kit Black w/ OEM Sound Generator Tube Delete - 2008-2014 Subaru WRX / STI / 2018-2021 STI

    11 In Stock

    125011

    GrimmSpeed Post MAF Hose Kit Black w/ OEM Sound Generator Tube Delete - 2008-2014 Subaru WRX / STI / 2018-2021 STI

    5.0(1)
    $84.00
    GrimmSpeed Turbo to Exhaust Manifold Gasket - 2003-2015 Mitsubishi Evo 8/9/X

    100 In Stock

    020003

    GrimmSpeed Turbo to Exhaust Manifold Gasket - 2003-2015 Mitsubishi Evo 8/9/X

    $20.00
    GrimmSpeed Strut Bar (Red) - 2015-2021 Subaru WRX / STI

    22 In Stock

    GRM1.1029.1.RED

    GrimmSpeed Strut Bar (Red) - 2015-2021 Subaru WRX / STI

    $249.00
    GrimmSpeed Strut Bar (Red) - 2008-2014 Subaru WRX / STI

    8 In Stock

    GRM1.1030.1.RED

    GrimmSpeed Strut Bar (Red) - 2008-2014 Subaru WRX / STI

    $249.00
    22-24 Subaru WRX Grimmspeed Post MAF Pipe Kit

    17 In Stock

    22-24 Subaru WRX Grimmspeed Post MAF Pipe Kit

    $209.00

    Page 1 of 16

    Founded in 2006, GrimmSpeed has established itself as a renowned name in the realm of performance parts, driven by a commitment to innovation and excellence. This company, led by a team of ardent car enthusiasts, was born out of a passion for delivering exceptional aftermarket products. Initially focused on Subaru WRX, GrimmSpeed's expanding team and engineering expertise have propelled it into catering to Mitsubishi, Ford, MazdaSpeed, and Hyundai markets.

    The journey began humbly, operating out of a single-stall townhouse garage in Maplewood, Minnesota. Over time, GrimmSpeed has transformed from a garage startup into a thriving business, offering a diverse range of high-quality products designed to elevate vehicle performance. From intercoolers and exhaust systems to intakes, gaskets, engine pulleys, phenolic spacers, and boost controllers, GrimmSpeed has emerged as a trusted name for automotive enthusiasts.

    GrimmSpeed's decision-making process is guided by three fundamental principles:

    1. Innovation: Innovation is the cornerstone of GrimmSpeed's ethos. Every project undertaken by the company is required to feature at least one groundbreaking element. Whether introducing novel concepts or enhancing existing products, the team at GrimmSpeed is driven by an unwavering passion for creating products that not only function effectively but also leave a lasting impact on the enthusiast community.

    2. Keeping Jobs in America: GrimmSpeed is on a mission to contribute to the revival of manufacturing in the United States. A substantial portion of the company's manufacturing activities occurs within the country, reflecting its commitment to showcasing America's manufacturing prowess to the world. Most of GrimmSpeed's partners are conveniently located in Minnesota, many of them just an hour's drive away. For the company, it's not just about profit margins; it's about making a statement that high-quality products can still be produced on American soil.

    3. Customer Service Excellence: Recognizing the varying standards of customer service in today's world, GrimmSpeed has set out to redefine customer service. When dealing with GrimmSpeed, customers can expect a service that embodies honesty, transparency, and integrity. In the face of product delays, GrimmSpeed refuses to offer vague assurances but instead provides customers with the most up-to-date information available. Should customers require assistance with product installation, they will find GrimmSpeed just a phone call or email away, ready to assist until the issue is resolved. Keeping promises is non-negotiable for GrimmSpeed; when the company commits to calling back, customers can trust that the call will indeed be made.

    Here are a couple featured parts that really show GrimmSpeed's commiment to quality:

    Grimmspeed is famous (well famous in the subaru world) for their Bypass Valves. These come in Black or Red and do not require tuning. 

    Recently GrimmSpeed expanded thier line up of performance parts by adding WRX turbochargers.