2015-2021 Subaru STI Aftermarket Parts

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  • GrimmSpeed [02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT] Uppipe to Turbo Gasket | 024001

    In Stock

    GrimmSpeed Uppipe to Turbo Gasket

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

    $31.00
    $31.00 $31.00
  • Tint My Light [15 - 21 WRX/STI] Smoked Head Light Covers - JDMuscleLight / Paint ProtectionTML.10028
    Up to $30 off
    In Stock

    Tint My Light Smoked Head Light Covers

    Fits: 15-21 WRX/STI

    Only 19 left
    $99.00
    $99.00 $129.00
  • JDMuscle [15-21 WRX/STI] Carbon Fiber HT Style Rear Spats | JDM-WRX15-RSD3

    JDMuscle Carbon Fiber HT Style Rear Spats

    Fits: 15-21 WRX/STI

    $249.00
    $249.00 $249.00
  • Koyo [08-21 WRX/STI] Radiator | VH091662
    Up to $157.60 off

    Koyo Radiator

    Fits: 08-21 WRX/STI

    $408.00
    $408.00 $565.60
  • JDMuscle [15-21 WRX/STI] Paint Matched Trunk Duck Bill V2
    Up to $100 off
    In Stock

    JDMuscle Paint Matched Trunk Duck Bill V2

    Fits: 15-21 WRX/STI

    Only 2 left
    From $189.00
    From $189.00 $279.00
  • Perrin [02-07 WRX, 04-21 STI, 04-08 FXT] 2.4" Turbo Inlet Hose - Black/Red/Blue | PSP-INT-401
    Up to $83.25 off
    In Stock

    Perrin 2.4" Turbo Inlet Hose - Black/Red/Blue

    Fits: 02-07 WRX, 04-21 STI, 04-08 FXT

    $249.75
    $249.75 $333.00
  • Perrin [15-21 WRX/STI, 13-17 Crosstrek/Impreza] Hella Horn Bracket | PSP-BDY-303
    Up to $14 off
    In Stock

    Perrin Hella Horn Bracket

    Fits: 15-21 WRX/STI, 13-17 Crosstrek/Impreza

    $42.00
    $42.00 $56.00
  • Extreme Online Store [15 - 21 WRX/STI] Rear Gurney Flap Spoiler Extension - JDMuscleSpoilers and WingsSPOILER-197-ABSPrimer Black

    Extreme Online Store Rear Gurney Flap Spoiler Extension

    Fits: 15-21 WRX/STI

    From $90.00
    From $90.00 $79.98
  • Turbo XS [WRX/STI] OEM Downpipe to 3in Cat - Back Adapter w/Standard Exhaust Gasket | ADA - OEMDP - 3CB - JDMuscleExhaust Gaskets and HardwaretxsADA-OEMDP-3CB
    Up to $9 off

    Turbo XS OEM Downpipe to 3in Cat-Back Adapter w/Standard Exhaust Gasket

    Fits: WRX/STI

    $30.00
    $30.00 $39.00
  • Seibon Carbon Fiber License Plate Frame - Universal | CFLPF

    In Stock

    Seibon Carbon Fiber License Plate Frame - Universal

    $54.00
    $54.00 $54.00
  • JDMuscle 15-21 WRX/STI Tanso Carbon Fiber Exhaust Trim Covers
    Up to $5 off
    In Stock

    JDMuscle Pre-preg Carbon Fiber Exhaust Trim Covers

    Fits: 15-21 WRX/STI

    Only 2 left
    $179.00
    $179.00 $184.00
  • GrimmSpeed [18-21 WRX/STI, 13-21 BRZ, 10-14 Legacy] License Plate Relocation Kit | 094029

    GrimmSpeed License Plate Relocation Kit

    Fits: 18-21 WRX/STI, 13-21 BRZ, 10-14 Legacy

    $112.00
    $112.00 $112.00
  • Grimmspeed [02-21 WRX/STI, 14-16 Forester, 02-07 Impreza] Hella Horn Bracket | 040004

    Grimmspeed Hella Horn Bracket | 040004

    Fits: 02-21 WRX/STI, 14-16 Forester, 02-07 Impreza

    $69.00
    $69.00 $69.00
  • Perrin [02-25 WRX/STI, LGT, FXT] Pitch Stop Mount-Black/Silver | PSP-DRV-101
    Up to $29.25 off
    In Stock

    Perrin Pitch Stop Mount-Black/Silver

    Fits: 02-26 WRX/STI, LGT, FXT

    Only 19 left
    $87.75
    $87.75 $117.00
  • Subaru OEM [12 - 21 WRX/STI / 13 - 17 Crosstrek] Kicker Upgraded Speakers | H631SFJ001 - JDMuscleSound and AccessoriesH631SFJ001

    Subaru OEM Kicker Upgraded Speakers | H631SFJ001

    Fits: 12-21 WRX/STI / 13-17 Crosstrek

    $299.95
    $299.95 $299.95
  • JDMuscle [15-21 WRX/STI] VS Style Carbon Fiber/FRP Fenders
    Up to $251 off
    In Stock

    JDMuscle VS Style Carbon Fiber/FRP Fenders

    Fits: 15-21 WRX/STI

    Only 4 left
    From $999.00
    From $999.00 $1,250.00

The 2015-2021 Subaru STI represents the final evolution of Subaru’s legendary EJ-powered performance sedan. Combining rally-bred engineering, aggressive styling, and exceptional tuning potential, the VA-generation STI remains one of the most sought-after platforms among enthusiasts. We offer a massive selection of Subaru STI aftermarket parts designed to help you maximize performance, improve handling, and create a build that reflects your vision.

Looking for premium Subaru STI parts? We have a carefully curated catalog that features products from the industry’s most trusted manufacturers. Our collection of STI parts makes it easy to transform your STI into something truly unique.

FAQs

Which Subaru STI aftermarket parts provide the biggest benefits?

When it's time to get serious, turbocharger upgrades, fuel system components, intercoolers, engine management solutions, and supporting bolt-ons are where the real power lives. Pair them with a proper tune and your STI becomes a completely different machine.

What are the ideal Subaru STI parts for beginners?

If you're just getting started, you're in the right place. Catback exhaust systems, intakes, lowering springs, wheels, shift knobs, and aero accessories are the most popular entry points for a reason. They deliver noticeable results in appearance and driving feel without requiring you to pop the hood.

Which Subaru STI accessories are actually worth adding?

More than you'd think. Mud flaps, carbon fiber trim, upgraded lighting, shift knobs, floor mats, and exterior aero components are the kind of Subaru STI aftermarket parts that quietly elevate the whole ownership experience: personalizing the car while making everyday use more enjoyable.

Why buy Subaru STI aftermarket parts from JDMuscle?

Hundreds of trusted performance brands, competitive pricing, expert customer support, and fast shipping all in one place. The JDMuscle Garage feature lets you explore real customer builds for inspiration before you buy, so you can build with confidence.