4910 products

  • GSC Power Division Valve Spring Kit WRX/STI EJ Turbo Series 2002-2020
    GSC Power Division

    Valve Spring Kit - EJ Turbo

    Fits: 02-14 WRX, 04-20 WRX STI

    $26648
    Pay over time · Est. $8.33/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.

  • GSC Stage 1 Camshafts WRX 2006-2007 / STI 2004-2007 | 7025S1
    GSC Power Division

    Stage 1 Camshafts

    Fits: 06-07 WRX, 04-07 WRX STI

    $95625
    Pay over time · Est. $29.88/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.

  • GSC Stage 2 Camshafts WRX 2006-2007 / STI 2004-2007 | 7025S2
    GSC Power Division

    Stage 2 Camshafts

    Fits: 06-07 WRX, 04-07 WRX STI

    $95625
    Pay over time · Est. $29.88/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.

  • Spec Stage 1 Clutch Kit Subaru STI 2004-2020
    SPEC

    Stage 1 Clutch Kit

    Fits: 04-20 Subaru STI

    $55710
    Pay over time · Est. $17.41/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.

  • Spec Stage 4 Clutch Kit Subaru STI 2004-2020
    SPEC

    Stage 4 Clutch Kit

    Fits: 04-20 Subaru STI

    $62010
    Pay over time · Est. $19.38/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.

  • Spec Stage 3 Clutch Kit Subaru STI 2004-2020
    SPEC

    Stage 3 Clutch Kit

    Fits: 04-20 Subaru STI

    $62010
    Pay over time · Est. $19.38/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.

  • Spec Stage 5 Clutch Kit Subaru STI 2004-2020
    SPEC

    Stage 5 Clutch Kit

    Fits: 04-20 Subaru STI

    $71910
    Pay over time · Est. $22.47/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.

  • SPEC [04-21 STI] Aluminum Flywheel | SU30A
    SPEC

    Aluminum Flywheel

    Fits: 04-21 STI

    $43110
    Pay over time · Est. $13.47/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.

  • Spec Stage 2 Clutch Kit Subaru STI 2004-2020
    SPEC

    Stage 2 Clutch Kit

    Fits: 04-20 Subaru STI

    $62010
    Pay over time · Est. $19.38/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.

  • Spec Stage 2+ Clutch Kit Subaru STI 2004-2020
    SPEC

    Stage 2+ Clutch Kit

    Fits: 04-20 Subaru STI

    $65610
    Pay over time · Est. $20.50/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.

  • Spec Stage 3+ Clutch Kit Subaru STI 2004-2020
    SPEC

    Stage 3+ Clutch Kit

    Fits: 04-20 Subaru STI

    $75510
    Pay over time · Est. $23.60/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.

  • Megan Racing OE-RS Cat Back Exhaust WRX/STI 2002-2007 | MR-CBS-#A-OE
    Megan Racing

    OE-RS Cat-Back Exhaust

    Fits: 02-07 WRX/STI

    $59400

  • In Stock
    Megan Racing Turbo Type Cat Back Exhaust WRX/STI 2002-2007 | MR-CBS-A-V2
    Megan Racing

    Turbo Type Cat-Back Exhaust

    Fits: 02-07 WRX/STI

    Only 5 left
    $59400
    Pay over time · Est. $18.56/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.

  • Megan Racing Lowering Springs Subaru STI 2004-2007 | MR-LS-WRX04
    Megan Racing

    Lowering Springs

    Fits: 04-07 Subaru STI

    $25080
  • Up to $30 off
    Radium Engineering Fuel Hanger | Pumps NOT Included AEM 50-1200 E85 or 50-1000 Gas WRX/STI 2002-2007
    Radium Engineering
    $56995$599.95 Save $30
    Pay over time · Est. $17.81/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.

  • Up to $38.01 off
    Radium Engineering Fuel Hanger | Single Pump Inc Walbro F90000274 E85 WRX/STI 2002-2007
    Radium Engineering
    $72194$759.95 Save $38.01
    Pay over time · Est. $22.56/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.