4911 products

  • Up to $300 off
    SuperPro 15 - 21 STI Sway Bar Kit 26mm Front Adjustable / 24mm Rear Adjustable w/ Endlinks | RCSTI099KIT - JDMuscleSway BarssprRCSTI099KIT
    Superpro
    $69999$999.99 Save $300
    Pay over time · Est. $21.87/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 $30 off
    In Stock
    Tein 08+ Subaru STi 5 Door / 11+ STi 4 Door Street Basis Z Coilovers | GSS84 - 8USS2 - JDMuscleCoiloversteinGSS84-8USS2
    Tein

    Street Basis Z Coilovers

    Fits: 08-14 WRX STI

    Only 2 left
    $78000$810.00 Save $30
    Pay over time · Est. $24.38/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.

  • Up to $221.96 off
    DBA [18 - 21 STI] 4000 Series XD Crossdrilled / Dimpled Front Rotor | 43050XD - 10 - JDMuscleBrake Rotorsdba43050XD-10
    DBA
    $37200$593.96 Save $221.96
    Pay over time · Est. $11.63/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 $129.49 off
    DBA [18 - 21 STI] 4000 Series XD Crossdrilled / Dimpled Rear Rotor | 43051XD - 10 - JDMuscleBrake Rotorsdba43051XD-10
    DBA
    $21700$346.49 Save $129.49
    Pay over time · Est. $6.78/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 $93.65 off
    Torque Solution 08 - 21 STI / 08 - 14 WRX PTFE Fuel Line Kit for for - 6 Aeromotive FPR | TS - SU - 6FLK - AM - P - 08 - JDMuscleFuel Lines and FittingstqsTS-SU-6FLK-AM-P-08
    Torque Solution

    PTFE Fuel Line Kit for -6 Aeromotive FPR

    Fits: 08-14 WRX, 08-21 WRX STI

    $37300$466.65 Save $93.65
    Pay over time · Est. $11.66/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 $23.65 off
    Torque Solution 08 - 21 STI / 08 - 14 WRX PTFE Flex Fuel Add - On Kit | TS - SU - 6FLK - AM - P - 08 - FFA - JDMuscleFuel Lines and FittingstqsTS-SU-6FLK-AM-P-08-FFA
    Torque Solution

    PTFE Flex Fuel Add-On Kit

    Fits: 08-14 WRX, 08-21 WRX STI

    $14300$166.65 Save $23.65
  • Up to $115.77 off
    Torque Solution 08 - 21 STI / 08 - 14 WRX PTFE Fuel Line Kit w/ Flex Fuel | TS - SU - 6FLK - AM - P - 08 - FF - JDMuscleFuel Lines and FittingstqsTS-SU-6FLK-AM-P-08-FF
    Torque Solution

    PTFE Fuel Line Kit with Flex Fuel

    Fits: 08-14 WRX, 08-21 WRX STI

    $46200$577.77 Save $115.77
    Pay over time · Est. $14.44/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 $4 off
    Cobb [15 - 21 WRX/STI] AccessPORT V3 - JDMuscleTunecobbAP3-AU-SUB-004
    COBB Tuning

    AccessPORT V3 - Australia

    Fits: 15-21 WRX/STI Sedan MT

    $76600$770.00 Save $4
    Pay over time · Est. $23.94/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 $10.96 off
    In Stock
    EBC 18 - 21 STI Stainless Steel Brake Line Kit | BLA7740 - 4L - JDMuscleBrake LinesebcBLA7740-4L
    EBC Brakes
    Only 2 left
    $20821$219.17 Save $10.96
    Pay over time · Est. $6.51/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 $10.96 off
    EBC 15 - 17 STI 2.5T Stainless Steel Brake Line Kit | BLA7739 - 4L - JDMuscleBrake LinesebcBLA7739-4L
    EBC Brakes
    $20821$219.17 Save $10.96
    Pay over time · Est. $6.51/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.

  • 3D MAXpider [15 - 21 WRX/STI] Kagu Cargo Liner - Black | M1SB0201309 - JDMuscleFloor MatsaceM1SB0201309
    3D MAXpider

    Kagu Cargo Liner - Black

    Fits: 15-21 WRX/STI

    $14799
  • Up to $24 off
    BLOX Racing 2015+ WRX/STI Fender Shrouds - Red | BXAC - 50310 - RD - JDMuscleFender ShroudsbloBXAC-50310-RD
    BLOX Racing

    Fender Shrouds - Red

    Fits: 15-21 WRX/STI

    $9600$120.00 Save $24
  • Up to $23 off
    BLOX Racing 2015+ WRX/STI Fender Shrouds - White | BXAC - 50310 - WH - JDMuscleFender ShroudsbloBXAC-50310-WH
    BLOX Racing

    Fender Shrouds White

    Fits: 15-21 WRX/STI

    $9200$115.00 Save $23

  • In Stock
    Torque Solution 08 - 14 Mitsubishi Evolution X/WRX STI Super Shorty 2in. Billet Antenna | TS - BA - BL10 - P - JDMuscleAntennastqsTS-BA-BL10-P
    Torque Solution
    Only 9 left
    $2777
  • Up to $13.50 off
    Revel [15 - 21 WRX/STI] GT Dry Carbon Belt Cover Replacement - 1 Piece | 1TR4GT0AS25 - JDMuscleBelt Coversrvl1TR4GT0AS25
    Revel
    $25650$270.00 Save $13.50
    Pay over time · Est. $8.02/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.