2015-2021 Subaru STI Parts & Accessories

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  • In Stock
    Rally Armor [15-21 WRX/STI] UR Mudflaps Black Urethane Silver Logo - JDMuscleMudflapsralMF32-UR-BLK/SIL
    Rally Armor

    Black UR Mud Flap w/ Silver Logo

    Fits: 15-21 WRX/STI

    Only 5 left
    $19050
  • HKS [15-21 WRX/STI] HIPERMAX S Full Coilover Kit | 80300-AF009 - JDMuscleCoilovershks80300-AF009
    HKS

    HIPERMAX S Full Coilover Kit

    Fits: 15-21 WRX/STI

    $2,08000
    Pay over time · Est. $65.00/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.
  • APR [18-21 WRX/STI] Performance Carbon Fiber Complete Canard Kit - JDMuscleCanardsAB-808048
    APR Performance

    Carbon Fiber Canard

    Fits: 18-21 WRX STI

    $56900
    Pay over time · Est. $17.78/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 $50 off
    In Stock
    PLM WRX & STI 2015 - 2021 Axle-Back Exhaust / Muffler Deletes V1 Poish / Titanium Tip
    Private Label MFG

    PLM Axle-Back Exhaust / Muffler Deletes - Polished / Titanium Tips

    Fits: 15-21 WRX/STI

    Only 16 left
    From $34900$399.00 Save $50
    Pay over time · Est. $10.91/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.
  • VIS Racing [15-21 WRX/STI] Carbon Fiber Trunk Trim Garnish
    VIS Racing

    Carbon Fiber Trunk Trim Garnish

    Fits: 15-21 WRX/STI

    $25000
    Pay over time · Est. $7.81/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 $100 off
    In Stock
    JDMuscle [18-21 WRX/STI] HT STYLE V2 FRONT CARBON FIBER LIP
    JDMuscle

    HT STYLE V2 FRONT CARBON FIBER LIP *Special Order*

    Fits: 18-21 WRX/STI

    Only 1 left
    $39900$499.00 Save $100
    Pay over time · Est. $12.47/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.
  • Up to $60 off
    In Stock
    Racing Art 15-21 WRX/STO Sequential Smoked Sequential Turn Signal
    Racing Art

    Sequential Smoked Turn Signal *Clearance* *No Returns*

    Fits: 15-21 WRX/STI

    Only 11 left
    $3900$99.00 Save 61%
  • Up to $18.75 off
    In Stock
    Revel 15-21 WRX/STI GT Dry Carbon Engine Air Scoop Cover | 1TR4GT0AS03
    Revel

    GT Dry Carbon Engine Hood Scoop Cover

    Fits: 15-21 WRX/STI

    Only 5 left
    $35625$375.00 Save $18.75
    Pay over time · Est. $11.13/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 $130 off
    In Stock
    Seibon 15-21 WRX/STI OEM-Style Carbon Fiber Trunk Lid | TL15SBIMP
    Seibon

    OEM-Style Carbon Fiber Trunk Lid

    Fits: 15-21 WRX/STI

    Only 12 left
    $1,17000$1,300.00 Save $130
    Pay over time · Est. $36.56/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.
  • APR 15-21 STI GTC-300 Carbon Fiber Rear Wing w/ Deck 67-Inch | AS-106766
    APR Performance

    GTC-300 Carbon Fiber Adjustable Wing (67")

    Fits: 15-21 WRX STI

    $2,34700
    Pay over time · Est. $73.34/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.

  • In Stock
    Remark 15-21 WRX/STI Mid Pipe Kit Resonated | RO-CPVA-C
    Remark

    Mid Pipe Kit Resonated

    Fits: 15-21 WRX/STI

    Only 5 left
    $85500
    Pay over time · Est. $26.72/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 $73.80 off
    In Stock
    Perrin [02-21 WRX, 04-21 STI, 13-22 BRZ, 13-16 FRS, 17-21 GT86, 2022 GR86] V2 Engine Mounts | PSP-DRV-055
    Perrin Performance

    Perrin V2 Engine Mounts

    Fits: 02-25 WRX, 04-21 STI, 13-25 BRZ, 13-16 FR-S, 17-20 86, 22-25 GR86

    Only 9 left
    Black Friday Deal: 20% Off Ends 1/4
    $29520$369.00 Save $73.80
    Pay over time · Est. $9.23/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.
  • APR 15-17 WRX/STI Front Bumper Canards
    APR Performance

    Front Bumper Canards

    Fits: 15-17 WRX/STI

    From $30500
    Pay over time · Est. $9.53/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.
  • Up to $195 off
    In Stock
    ACT 04-21 STI / 07-09 Legacy GT Spec. BHeavy Duty Performance Street Disc Clutch Kit | SB10-HDSS
    ACT

    Heavy Duty Performance Street Disc Clutch Kit

    Fits: 04-21 WRX STI, 07-09 Legacy GT spec.B

    $83300$1,028.00 Save $195
    Pay over time · Est. $26.03/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 [02-07 WRX, 04-21 WRX STI, 06-08 Forester XT] Bypass Valve Recirculation Hose
    OVERTAKE

    Bypass Valve Recirculation Hose

    Fits: 02-07 WRX, 04-21 WRX STI, 06-08 Forester XT

    $3900

  • In Stock
    OLM [18 - 21 WRX/STI] Facelift JDM Style DRL / Sequential Turn Signal Bezel - No Fog Hole - JDMuscleFog LightsOLMA.70077.1
    OLM

    Facelift JDM Style DRL / Sequential Turn Signal Bezel - No Fog Hole

    Fits: 18-21 WRX/STI

    Only 6 left
    $17900

The VA-chassis STI is one of the most modified platforms in the Subaru universe, and for good reason. The EJ257 responds to upgrades, the chassis rewards better suspension, and the aftermarket support is extensive. This collection brings together STI aftermarket parts for every corner of your 2015-2021 build from top brands Grimmspeed, Perrin Performance, Cobb Tuning, and more. 

  • Engine and drivetrain: intakes, turbo upgrades, exhaust systems, intercoolers, clutches and short shifters. 
  • Suspension and handling: coilovers, springs, sway bars, bushings and chassis bracing. Wheels and brakes to put it all to the ground. 
  • Let’s not forget the cosmetic upgrades: carbon fiber, lip kits, spoilers, lighting and interior accessories from JDMuscle.

Every product listing in our STI aftermarket parts collection has verified information, so you know what fits before you order.

FAQs

Do 2015 STI aftermarket parts fit all VA-generation models?

Many do: the 2015-2021 STI shares its core platform throughout. Engine, drivetrain, and suspension parts usually cross over without issue. Exterior components are the exception, since the 2018 facelift changed several body panels. Always check the fitment info on the listing.

What should I upgrade first on my STI?

Intake, cat-back exhaust, and a professional tune give you the most noticeable gains for the money and lay a foundation for everything after. If handling is your priority, coilovers or springs plus sway bars come first instead of STI aftermarket parts.

Will these parts affect my warranty?

STI aftermarket parts can affect coverage on related components, and most 2015-2021 STIs are outside factory warranty anyway. Check with your dealer if warranty status matters to your build.

Why buy STI aftermarket parts from JDMuscle?

We're a family business run by actual Subaru people. We mod our own cars and handle our own customer service. Curated brands, competitive pricing with our price match guarantee, easy returns, and same-day shipping (Saturdays included). Free shipping over $199 to the continental 48 states.