4911 products

  • GrimmSpeed Front Mount Intercooler Core Coated Black Subaru 15-21 WRX / 15-21 STI | GRM090260 - JDMuscleIntercoolersgrm090260
    GrimmSpeed
    $1,32900
    Pay over time · Est. $41.53/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • GrimmSpeed Front Mount Intercooler Pipe Kit Red Subaru STI 15-21 | GRM090231 - JDMuscleIntercooler Piping Kitsgrm090231
    GrimmSpeed
    $90800
    Pay over time · Est. $28.38/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • GrimmSpeed Front Mount Intercooler Piping Kit Black Subaru STI 2008-2014 | GRM090223 - JDMuscleIntercooler Piping Kitsgrm090223
    GrimmSpeed
    $90800
    Pay over time · Est. $28.38/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • Grimmspeed [15-21 STI] Stage 1 Power Package w/ Red Intake | grm191013-RD - JDMuscleEngine Package Dealsgrm191013-RD
    GrimmSpeed
    $42266
    Pay over time · Est. $13.21/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • Up to $12.80 off
    PERRIN Performance Hose Clamp Kit Subaru STI 15-2020 | PSP-ITR-415 - JDMuscleUniversal Hose ClampsperPSP-ITR-415
    Perrin Performance

    Perrin Hose Clamp Kit

    Fits: 15-20 WRX STI

    Black Friday Deal: 20% Off Ends 1/4
    $5120$64.00 Save 20%
  • Up to $35.10 off
    PERRIN Performance [15-20 STI] Coolant Overflow Tank | ASM-ENG-502 - JDMuscleOverflow / Expansion TanksperASM-ENG-502
    Perrin Performance

    Perrin Coolant Overflow Tank

    Fits: 15-21 WRX STI

    $19890$234.00 Save $35.10
  • Up to $220 off
    In Stock
    Seibon [15-21 WRX/STI] Carbon Fiber Rear Diffuser | seiRD18SBIMP - JDMuscleDiffusers and Vortex GeneratorsseiRD18SBIMP
    Seibon

    Carbon Fiber Rear Diffuser

    Fits: 18-21 WRX/STI

    Only 6 left
    $1,98000$2,200.00 Save $220
    Pay over time · Est. $61.88/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • Up to $62 off
    Seibon Carbon Fiber Roof Fin Spoiler Hatchback 2008-2014 WRX/STI | seiRFS0809SBIMP - JDMuscleDiffusers and Vortex GeneratorsseiRFS0809SBIMP
    Seibon
    $55800$620.00 Save $62
  • Brian Crower Stroker Kit 83mm Billet Crank/ProH625+ Rods 5.141in Custom Pistons Subaru EJ257 STI 2004-2017 | BC0628 - JDMuscleStroker KitsbrcBC0628
    Brian Crower
    $4,02900
    Pay over time · Est. $125.91/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • Up to $916 off
    Moton Front & Rear 3-Way Motorsport Coilover GG/GD 5x100 w/ Street Springs WRX 2003-2007 / STI 2003-2007 | M 531 007-S - JDMuscleCoiloversmtoM 531 007-S
    Moton
    $8,24400$9,160.00 Save $916
    Pay over time · Est. $257.63/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • Up to $858 off
    Moton Front and Rear 2-Way Clubsport Coilovers 5x114.3 w/ Street Springs WRX 2005-2007 / STI 2005-2007 | 531 001-S - JDMuscleCoiloversmtoM 531 001-S
    Moton
    $7,72200$8,580.00 Save $858
    Pay over time · Est. $241.31/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • Up to $874 off
    Moton Front and Rear 2-Way Clubsport Coilovers 5x100 w/ Street Springs WRX 2003-2007 / STI 2003-2007 | 531 000-S - JDMuscleCoiloversmtoM 531 000-S
    Moton
    $7,86600$8,740.00 Save $874
    Pay over time · Est. $245.81/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • Moton Rear 3-Way Motorsport Coilover GG/GD 5x100 Track WRX 2003-2007 / STI 2003-2007 | M 531 007-T - JDMuscleCoiloversmtoM 531 007-T
    Moton
    $9,09900
    Pay over time · Est. $284.34/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • Moton Rear 2-Way Clubsport Coilovers 5x114.3 Track WRX 2005-2007 / STI 2005-2007 | 531 001-T - JDMuscleCoiloversmtoM 531 001-T
    Moton
    $7,39900
    Pay over time · Est. $231.22/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • Moton Rear 2 Way Clubsport Coilovers Track 5x100 WRX 2003-2007 / STI 2003-2007 | 531 000-T - JDMuscleCoiloversmtoM 531 000-T
    Moton
    $7,39900
    Pay over time · Est. $231.22/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

  • HKS 04-21 STI Fuel Upgrade Kit | 14007-AF003 - JDMuscleFuel Pumps and Accessorieshks14007-AF003
    HKS

    Fuel Upgrade Kit

    Fits: 04-21 WRX STI

    $1,13000
    Pay over time · Est. $35.31/payment
    ⓘ

    Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

Subaru WRX STI Performance Parts

We know that the Subaru WRX and STI were built to be customized by automotive enthusiasts like you. That's why our winning team of Subaru WRX and STI experts here at JDMuscle offer a long list of the finest and most effective Subaru STI and WRX parts available on the market. Make your Subaru WRX or STI look, feel, and perform according to your unique tastes as well as your high expectations with top quality aftermarket performance parts. Your vehicle should be as unique as its driver. A stock automobile just doesn't cut it. With JDmuscle, customizing your car with high quality Subaru STI parts has never been easier.

 

Superior Craftsmanship for Every Part

You'll enjoy outstanding craftsmanship and attention to detail evident in every aspect of our beautiful Subaru STI parts! Boost the power, performance, and styling of your Subaru with high-quality performance parts from J Muscle, including WRX STI parts and accessories. Subaru has a focus on superior driving performance, and the aftermarket Subaru STI parts available in our inventory can take you and your vehicle to the next level.

Our Subaru STI Parts & Accessories Are the Best on the Market

Your Subaru is a performance machine, but the right custom Subaru STI parts can make it even better. Whether you opt for exhaust components, ignition components, engine management upgrades, or other enhancements, JDMuscle has the Subaru aftermarket parts you are looking for.

JDMuscle is the leader when it comes to high quality, well tested, and easy to install Subaru STI parts and performance accessories. Get the most out of your vehicle with the finest aftermarket WRX STI parts available, only through JDMuscle. Get in touch today to learn more. Our team of Subaru experts is standing by to answer all of your important questions.

Welcome to JDMuscle, your source for the best Subaru WRX STI performance parts and accessories! If you're looking to boost your Subaru's power and enhance its visual aesthetics, you've come to the right place.

 

Premium WRX & STI Aftermarket Parts

We carry a wide selection of premium aftermarket parts to take your WRX or STI to the next level. Our inventory includes everything from intakes and turbos to improve performance, to lips and wings for an aggressive new look. 

We only carry parts from top brands known for quality and innovation like APR, Cobb, ETS, Invidia, and more. We've carefully curated our catalog to offer you the highest quality components on the market.

 

Improve Your Car's Power & Visual Aesthetics

With our performance upgrades, you can increase your Subaru's horsepower, torque, and throttle response for better acceleration. Feel the rush as your WRX or STI surges forward when you step on the gas. 

We also offer stylish exterior add-ons like side skirts, diffusers, and Subaru WRX & STI front lips to give your ride a customized, head-turning look. Whether you're looking to improve performance or aesthetics, we've got you covered.

Upgrade Your Braking System

Ensuring your Subaru can stop as well as it can go is crucial. We stock 2015-2021 Subaru STI brakes, featuring cross-drilled, slotted, and vented rotors for superior stopping power. Our rotors are crafted from premium materials to withstand repeated heat cycles. Combine them with performance brake pads for shorter stopping distances. You'll have the peace of mind of knowing your car will handle and stop safely.

Enhance The Sound of Your Ride

A throaty exhaust note adds to the thrill of acceleration. We carry top exhaust brands like Invidia, ETS, and Tomei exhausts for 2015-2021 Subaru STI. Get deeper, louder sounds with cat-backs, axle-backs, and headers. Hear your engine truly come alive!

Our user-friendly website makes it easy to find parts for your specific Subaru model. We offer quick shipping across the USA and excellent customer service. Take your WRX or STI to new heights with JDMuscle performance parts! Contact us today.