WRX/STI 2015-2021 Performance Parts
Shop 2015–2021 Subaru WRX and STI performance parts including exhaust, suspension, intakes, turbo upgrades, and tuning solutions.
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Up to 19% offVendor:Yokohama WheelYokohama Adan RZIII 18x9 +35 5x114.3 - Black Gun Metallic & Diamond Cut
Only 4 leftRegular price $549.50Sale price $549.50 Regular priceUnit price per$675.00You Save $125.50! -
Up to 22% offVendor:Gram LightsGram Lights 57XR 18x9.5 +38 5x114.3 Eternal Blue Pearl
Only 4 leftRegular price $549.50Sale price $549.50 Regular priceUnit price per$702.70You Save $153.20! -
Vendor:COBBCobb 15-21 Subaru STI & WRX / 14-18 Forester XT AccessPORT V3
Regular price $689.92Sale price $689.92 Regular priceUnit price per -
Up to 6% offVendor:FAST OF WEST CHESTERMotul 8100 5w40 X-CESS Gen2 + Mazda Filter Oil Change Kit WRX 2002-2014 / STI 2004-2021
Regular price $65.99Sale price $65.99 Regular priceUnit price per$69.95You Save $3.96! -
Up to 10% offVendor:Hawk PerformanceHawk 2018 Subaru WRX STI Performance Ceramic Street Brake Pads
Regular price $173.69Sale price $173.69 Regular priceUnit price per$192.99You Save $19.30! -
Up to 19% offVendor:OPTION LABOption Lab S718 Wheel 19x9.5 35mm 5x114.3 73.1 Nightfall Grey w/Machined Lip
Regular price $329.95Sale price $329.95 Regular priceUnit price per$404.95You Save $75.00! -
Up to 5% offVendor:Gram LightsGram Lights 57DR 18x9.5 +38 5x114.3 Bronze2 Wheel
Only 18 leftRegular price $567.72Sale price $567.72 Regular priceUnit price per$597.60You Save $29.88! -
Sold outVendor:FORTUNE AUTOFortune Auto Gen 7 500 Series Coilovers | 2015-2021 Subaru WRX/STI
Regular price $1,799.00Sale price $1,799.00 Regular priceUnit price per$1,799.00 -
Up to 6% offVendor:FAST OF WEST CHESTERMotul Engine Break-In Oil 10w-40 + Mazda Filter Oil Change Kit WRX 2002-2014 / STI 2004-2021
Regular price $71.95Sale price $71.95 Regular priceUnit price per$76.94You Save $4.99! -
Up to 3% offVendor:South Bend ClutchSouth Bend / DXD Racing Clutch 03-11 Subaru Impreza WRX STI 2.5L Stg 3 Daily Clutch Kit
Only 3 leftRegular price $1,193.03Sale price $1,193.03 Regular priceUnit price per$1,229.93You Save $36.90! -
Up to 3% offVendor:South Bend ClutchSouth Bend / DXD Racing Clutch 03-11 Subaru Impreza WRX STI 2.5L Stg 1 HD Clutch Kit
Only 2 leftRegular price $902.32Sale price $902.32 Regular priceUnit price per$930.23You Save $27.91! -
Vendor:WeatherTechWeatherTech 12+ Subaru Impreza Rear FloorLiner - Black
Regular price $83.95Sale price $83.95 Regular priceUnit price per -
Vendor:WeatherTechWeatherTech 12+ Subaru Impreza Front FloorLiner - Black
Regular price $128.95Sale price $128.95 Regular priceUnit price per -
Vendor:WeatherTechWeatherTech 12+ Subaru Impreza Cargo Liners - Black
Only 6 leftRegular price $138.95Sale price $138.95 Regular priceUnit price per -
Vendor:FAST OF WEST CHESTERWheel Mate Muteki SR35 Close End Lug Nuts w/ Lock Set - Black 12x1.25 35mm
Regular price $95.00Sale price $95.00 Regular priceUnit price per$95.00
Why Buy from FAST of West Chester?
This isn’t a warehouse — it’s a performance shop. At FAST of West Chester, every part we sell has been installed, tested, and pushed on real builds.
Led by Dave Brown, our team knows what works, what doesn’t, and what actually delivers results. No guesswork. No wasted money. Just proven performance.
Unlike large online retailers, our recommendations are based on hands-on experience with Subaru, JDM, and performance platforms — ensuring every part we offer delivers reliable performance, fitment, and results.