4946 products


  • In Stock
    OVERTAKE [08-26 WRX, 08-21 STI] Rear Differential Upper Bushing Inserts - JDMuscleTransmission and Differential BushingsA10851
    OVERTAKE

    Rear Differential Upper Bushing Inserts

    Fits: 08-26 WRX, 08-21 WRX STI

    $3900

  • In Stock
    OVERTAKE [02-07 WRX, 04-21 STI, 04-08 FXT] Top Mount Intercooler - JDMuscleIntercoolersA10382BLKBlack
    OVERTAKE

    Top Mount Intercooler

    Fits: 02-07 WRX, 04-21 WRX STI, 04-08 Forester XT

    Only 7 left
    $77500
    Pay over time · Est. $24.22/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.


  • In Stock
    OVERTAKE [08-26 WRX, 08-21 STI] Rear Differential Lower Bushing Inserts - JDMuscleTransmission and Differential BushingsA10867
    OVERTAKE

    Rear Differential Lower Bushing Inserts

    Fits: 08-26 WRX, 08-21 WRX STI

    $2700

  • In Stock
    OVERTAKE [02-07 WRX, 04-07 STI] Transmission Crossmember Bushing Kit - JDMuscleBushing KitsA10929
    OVERTAKE

    Transmission Crossmember Bushing Kit

    Fits: 02-07 WRX, 04-07 WRX STI

    $5000

  • In Stock
    OVERTAKE [02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 OBXT/LGT] Turbo Heatshield Reflective Gold Foil - JDMuscleHeat Isolation & Heat WrapA10927
    OVERTAKE

    Turbo Heatshield Reflective Gold Foil

    Fits: 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 OBXT/LGT

    $4500

  • In Stock
    Truhart WRX: 15+ StreetPlus Coilovers | TH - S804 - JDMuscleStreetPlus CoiloverTRUTH-S804Subaru WRX: 15+ StreetPlus Coilovers [TH - S804]
    TruHart

    StreetPlus Coilovers

    Fits: 15-21 WRX/STI

    $80000
    Pay over time · Est. $25.00/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.


  • In Stock
    GrimmSpeed [02–14 WRX/04–21 STI EJ Engines] Titanium Alternator Shroud - JDMusclePulleysGRM.1065.1.TI
    GrimmSpeed

    Titanium Alternator Shroud

    Fits: 02-14 WRX, 04-21 WRX STI

    Only 1 left
    $18200

  • In Stock
    GrimmSpeed [04-21 STI] Shifter Bushing Kit 6-Speed - JDMuscleShifter BushingsGRM.1153.1.0
    GrimmSpeed

    Shifter Bushing Kit 6-Speed

    Fits: 04-21 WRX STI

    Only 1 left
    $4900

  • In Stock
    GrimmSpeed [15–21 WRX/STI] “Gentleman’s Exhaust” V2 Catback System – Non-Resonated - JDMuscleCat Back Exhaust SystemGRM.1025.1.0
    GrimmSpeed
    Only 1 left
    $1,29900
    Pay over time · Est. $40.59/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.


  • In Stock
    GrimmSpeed [15–21 WRX/STI] “Gentleman’s Exhaust” V2 Catback System – Resonated - JDMuscleCat Back Exhaust SystemGRM.1025.2.0
    GrimmSpeed
    Only 1 left
    $1,39900
    Pay over time · Est. $43.72/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 $146.20 off
    In Stock
    Koyo Aluminum Radiator Subaru Baja Turbo M/T 2004-2006 | VH091672
    Koyo Cooling

    Koyo Aluminum Radiator

    Fits: 02-07 WRX/STI M/T

    Only 19 left
    $39200$538.20 Save $146.20
    Pay over time · Est. $12.25/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.


  • In Stock
    JDMuscle [15 - 26 WRX, 15 - 21 STI] F1 LED Rear Fog/Brake/Reverse Light V5 w/ PNP Harness - JDMuscleAuxiliary Brake LightingClear Lens2015 - 2021
    JDMuscle
    $7899

  • In Stock
    JDMuscle [15 - 26 WRX, 15 - 21 STI] F1 LED Rear Fog/Brake/Reverse Light V4 w/ PNP Harness - JDMuscleAuxiliary Brake LightingClear Lens2015 - 2021
    JDMuscle
    $8900

  • In Stock
    JDMuscle [15 - 26 WRX, 15 - 21 STI] F1 Style Rear Fog/Brake Light V1.5 w/ PNP Harness - JDMuscleAuxiliary Brake LightingClear Lens/Black Base/Red Bar2015 - 2021
    JDMuscle
    $10899

  • In Stock
    JDMuscle [15 - 26 WRX, 15 - 21 STI] F1 Style Rear Fog/Brake Light V1 w/ PNP Harness - JDMuscleAuxiliary Brake LightingRed Lens/Red Base2015 - 2021
    JDMuscle
    $8899
  • Up to $11.60 off
    In Stock
    Perrin Performance Air Oil Separator FMIC Mounting Bracket for Subaru WRX & STI (02 - 21) - JDMuscleSPK1025494
    Perrin Performance
    Only 8 left
    Black Friday Deal: 20% Off Ends 1/4
    $4640$58.00 Save 20%

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.