2015-2021 Subaru STI Parts & Accessories

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  • Up to $123.21 off
    In Stock
    DBA [08-17 STI] 4000 Series Drilled / Slotted Rotor (Rear) | 42656XS-10
    DBA

    4000 Series XS Drilled & Slotted Rear Rotor

    Fits: 08-17 WRX STI

    Only 19 left
    $19100$314.21 Save $123.21
  • Up to $18 off
    In Stock
    Cusco 15-21 WRX/STI Front Tow Hook Red | 965-017-F
    Cusco

    Front Tow Hook, Red

    Fits: 15-21 WRX/STI

    Only 10 left
    $16200$180.00 Save $18
  • Up to $1.30 off
    In Stock
    Cusco 12MM Exhaust Hanger 08-21 WRX / 08-21 STI / 13-21 BRZ / 05-09 LGT / 08-11 Impreza | A160-RM002B
    Cusco

    12MM Exhaust Hanger

    Fits: 08-21 WRX, 08-21 STI, 13-21 BRZ, 05-09 LGT, 08-11 Impreza

    $1170$13.00 Save 10%
  • Up to $45.40 off
    In Stock
    ARP 02-14 WRX / 02-21 STI Custom Age 625+ Head Stud Kit | 260-4704
    ARP

    02-14 WRX / 02-21 STI Custom Age 625+ Head Stud Kit | 260-4704

    $61000$655.40 Save $45.40
    Pay over time · Est. $19.06/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.
  • JDMuscle X CraftC Performance [15-21 WRX/STI] F1 Flash/Strobe Module
    JDMuscle

    X CraftC Performance F1 Flash/Strobe Module - Windshield (Single)

    Fits: 15-21 WRX/STI

    $4900

  • In Stock
    GrimmSpeed 2-Bolt Up-Pipe for EJ25 Engines - JDMuscleTurbo UppipesGRM.1099.1.BLKBlack
    GrimmSpeed

    2-Bolt Up-Pipe for EJ25 Engines

    Fits: 04-21 WRX STI, 06-14 WRX, 06-13 Forester XT, 07-09 Legacy GT/Outback XT

    Only 4 left
    From $24565
    Pay over time · Est. $7.68/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 [02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT/OBXT] Downpipe Hardware Kit - JDMuscleExhaust Gaskets and HardwareA10714
    OVERTAKE

    Downpipe Hardware Kit

    Fits: 02-14 WRX, 04-21 WRX STI, 04-13 Forester XT, 05-09 Legacy GT/Outback XT

    $2900
  • StickerFab [15-21 WRX/STI] Smoked Tail Light Overlays - Dark, Light, Red, or Yellow - JDMuscleTail Lights15WRXTLDSDark Smoke
    StickerFab

    Smoked Tail Light Overlays - Dark, Light, Red, or Yellow

    Fits: 15-21 WRX/STI

    From $1499
  • FactionFab V2 FL - Spec Coilovers 2015 - 2021 WRX / STI - JDMuscleFFA1.10277.3
    FactionFab

    V2 FL-Spec Coilovers

    Fits: 15-21 WRX/STI

    $1,25000
    Pay over time · Est. $39.06/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 $18 off
    In Stock
    Overtake [08-26 WRX, 08-21 WRX STI Sedan] Catback Exhaust Hardware Refresh Kit
    OVERTAKE

    Catback Exhaust Hardware Refresh Kit

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

    Only 16 left
    $8900$107.00 Save $18
  • OLM OEM Style Fog / Turn Signal Harness - JDMuscleOLMOLM-84981VA010
    OLM

    OEM Style Fog / Turn Signal Harness

    Fits: 15-21 WRX, 15-17 WRX STI

    $2600
  • OLM Clear Tri - Bar Fog Light Bezel - 2018 - 2021 Subaru STI / 2018 WRX - JDMuscleOLMA.70106.1
    OLM

    Clear Tri-Bar Fog Light Bezel

    Fits: 18-21 WRX STI, 18 WRX

    $31500
  • OLM NB+R F1 Rear Brake Light (Smoke Lens, Gloss Black Base, Red Bar) - 15+ WRX / STI - JDMuscleOLMA.70051.4
    OLM

    NB+R F1 Rear Brake Light - Smoke Lens, Gloss Black Base, Red Bar

    Fits: 15-21 WRX / STI

    $14900

  • In Stock
    OLM [15 - 21 WRX/STI] Spec CR Tail Lights (Smoked Lens, Black Base) | A.70038.2 - JDMuscleTail LightsOLMA.70038.2
    OLM

    Spec CR Tail Lights (Smoked Lens, Black Base)

    Fits: 15-21 WRX/STI

    Only 11 left
    $42900
    Pay over time · Est. $13.41/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.

  • In Stock
    OLM OE Style Rain Guards - 2015 - 2021 WRX / STI - JDMuscleOLMA.70237.1
    OLM

    OE Style Rain Guards

    Fits: 15-21 WRX/STI

    Only 5 left
    $9000
  • Up to $26.20 off
    In Stock
    KYB 08 - 21 WRX/STI Shocks & Struts Stut Mount Front | SM5664 - JDMuscleStruts And ShockskybSM5664
    KYB

    Shocks & Struts Strut Mount Front

    Fits: 08-21 WRX/STI

    $7300$99.20 Save $26.20

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.