4911 products


  • In Stock
    COBB 04 - 21 STI Stage 1+ Drivetrain Package - JDMuscleShifter and Bushing Comboscobb215X01P-BK
    COBB Tuning

    Stage 1+ Drivetrain Package

    Fits: 04-21 WRX STI 6MT

    $37500
    Pay over time · Est. $11.72/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.

  • Nameless Performance [19 - 21 STI, 2018 STI Type RA] Axle Back 3.5" Single Wall Neochrome Tips and No Muffler | SUAB15WRX - 0MU - 35NEO - 19STI - JDMuscleAxle Back ExhaustsSUAB15WRX-0MU-35NEO-19STI
    Nameless Performance

    Axle Back 3.5" Single Wall Neochrome Tips and No Muffler

    Fits: 19-21 WRX STI, 18 WRX STI Type RA

    $66000
    Pay over time · Est. $20.63/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.

  • HKS 15 - 21 STI Dry Carbon Suction Kit | 70026 - AF001 - JDMuscleTurbo Inlet Hoses and Pipeshks70026-AF001
    HKS

    DryCarbon Suction Kit

    Fits: 15-21 WRX STI

    $71500
    Pay over time · Est. $22.34/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.

  • Subaru OEM 10 - 21 WRX/STI STI Group N Rear Shifter Bushing | B0220FG300 - JDMuscleShifter BushingssubB0220FG300
    Subaru OEM
    $4995
  • Nameless Performance [15 - 21 WRX/STI] Black Front Strut Tower Bar | FSTB - C - BLK - SUB - 15WRX - JDMuscleStrut Tower BarsFSTB-C-BLK-SUB-15WRX
    Nameless Performance

    Black Front Strut Tower Bar

    Fits: 15-21 WRX/STI

    $31000
    Pay over time · Est. $9.69/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.

  • Nameless Performance [15 - 21 WRX, 15 - 18 STI] Axle Back w/ 4" Double Wall Polished Tips and 5" Mufflers | SUAB15WRX - 5MU - 40SDW - JDMuscleAxle Back ExhaustsSUAB15WRX-5MU-40SDW
    Nameless Performance
    $1,14000
    Pay over time · Est. $35.63/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.

  • Nameless Performance [15 - 21 WRX, 15 - 18 STI] Axle Back Exhaust w/ 3.5" Single Wall Neochrome Tips and 4" Mufflers | SUAB15WRX - 4MU - 35NEO - JDMuscleAxle Back ExhaustsSUAB15WRX-4MU-35NEO
    Nameless Performance
    $1,00000
    Pay over time · Est. $31.25/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
    IAG 02 - 14 WRX / 04 - 21 STI / 05 - 12 LGT / 04 - 13 FXT Black Racing Timing Belt | IAG - ACC - 5206BK - JDMuscleTiming Belt ComponentsIAG-ACC-5206BK
    IAG Performance

    Black Racing Timing Belt

    Fits: 02-14 WRX, 04-21 WRX STI, 05-12 Legacy GT, 04-13 Forester XT

    Only 1 left
    $22999
    Pay over time · Est. $7.19/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.

  • CP - E cp - e 15 - 18 STI / 15 - 21 WRX Austenite Dual Muffler Axle Back Exhaust w/ Polished 4" Double Wall Tips | SBAE00002P - JDMuscleAxle Back ExhaustsCPESBAE00002P
    Custom Performance Engineering
    $1,00000
    Pay over time · Est. $31.25/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.

  • Turbo XS 08 - 21 STI 20G Turbocharger | TU - EJ - TXS400 - JDMuscleTurbosTU-EJ-TXS400
    Turbo XS

    20G Turbocharger

    Fits: 08-21 WRX STI

    $1,31920
    Pay over time · Est. $41.23/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
    COBB [18 STI Type RA, 19 - 21 STI] NexGen Stage 2 + Flex Fuel Power Package w/ Black Intake - JDMuscleEngine Package DealscobbSUB004NG2S2FF-BK
    COBB Tuning

    NexGen Stage 2+ Flex Fuel Power Package w/ Black Intake

    Fits: 19-21 WRX STI Sedan MT USDM, 18 Type RA Sedan MT USDM

    Only 14 left
    $4,44000
    Pay over time · Est. $138.75/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 $4.09 off
    In Stock
    Whiteline 02 - 21 WRX / 04 - 21 STI / 05 - 09 LGT / 09 - 13 FXT Replacement Dust Boot Kit for KCA313 | W0907 - JDMuscleBushing KitswhlW0907
    Whiteline

    Replacement Dust Boot Kit for KCA313

    Fits: 02-21 WRX, 04-21 WRX STI, 05-09 Legacy GT, 09-13 Forester XT

    Only 3 left
    $3679$40.88 Save 10%
  • Cusco [15-21 WRX/STI] Front Member Power Brace
    Cusco

    Front Member Power Brace

    Fits: 15-21 WRX/STI

    $20430
    Pay over time · Est. $6.38/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.

  • Cusco [15-21 WRX STI] Front Sway Bar 26mm
    Cusco

    Front Sway Bar 26mm

    Fits: 15-21 WRX STI

    $31230
    Pay over time · Est. $9.76/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.

  • Nameless Performance [15 - 21 WRX, 15 - 18 STI] Axle Back 3" Double Wall Polished Tips and No Muffler | SUAB15WRX - 0MU - 30SDW - JDMuscleAxle Back ExhaustsSUAB15WRX-0MU-30SDW
    Nameless Performance
    $63000
    Pay over time · Est. $19.69/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
    IAG Performance 08 - 14 WRX / 08 - 21 STI 3 Inch Aluminum MAF Mounting Flange | IAG - AFD - 1001 - JDMuscleIntake Misc.IAG-AFD-1001
    IAG Performance

    3 Inch Aluminum MAF Mounting Flange

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

    Only 1 left
    $4399

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.