Collection: Subaru WRX/STI 15-21'
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PowerStop Front Z26 Street Kit w/ Calipers | Subaru WRX (2015–2020) (KC4603-26)
Regular price $588.88 USDRegular priceUnit price / per$710.22 USDSale price $588.88 USDSale -
Competition Clutch Strip Series 1620 Clutch Kit | Multiple Fitments (15021-1620)
Regular price $514.71 USDRegular priceUnit price / per$625.00 USDSale price $514.71 USDSale -

Invidia Q300 Rolled Polished 4 tip Catback Exhaust | 2015-2021 Subaru WRX / STI (HS15STIG3S)
Regular price $1,605.22 USDRegular priceUnit price / per$2,480.80 USDSale price $1,605.22 USDSale -
Konig Tandem Gloss Graphite | 17x8" +45mm | 5x114.3mm Wheel
Regular price $450.76 USDRegular priceUnit price / per$450.76 USDSale price $450.76 USD -
TEIN EnduraPro Plus Rear Shock Absorber Kit - 2015-2021 Subaru WRX RWD (VAG)
Regular price $625.06 USDRegular priceUnit price / per$690.00 USDSale price $625.06 USDSale -
TEIN EnduraPro Plus Rear Shock Absorber Kit - 2015-2021 Subaru WRX STI RWD (VAF)
Regular price $625.06 USDRegular priceUnit price / per$690.00 USDSale price $625.06 USDSale -
TEIN EnduraPro Plus Rear Shock Absorber Kit - 2014-2020 Subaru WRX STI RWD (VAB)
Regular price $625.06 USDRegular priceUnit price / per$690.00 USDSale price $625.06 USDSale -
Torque Solution Thermal Downpipe Blanket | Subaru WRX/WRX STI (02-21) (TS-TH-SDPL)
Regular price $133.33 USDRegular priceUnit price / per$166.65 USDSale price $133.33 USDSale -
Bilstein B8 Performance Front Left Shock | 2015-2019 Subaru WRX/STI (35-249498)
Regular price $335.00 USDRegular priceUnit price / per$498.00 USDSale price $335.00 USDSale -
Bilstein B8 Performance Rear Shock | 2015-2019 Subaru WRX/STI (24-249508)
Regular price $166.00 USDRegular priceUnit price / per$247.00 USDSale price $166.00 USDSale -
HKS SSQV4 Black Recirculation BOV Kit | Subaru WRX FA20 (15-21) (71008-KF015B)
Regular price $380.99 USDRegular priceUnit price / per$404.80 USDSale price $380.99 USDSale -
HKS SSQV4 Blow Off Valve w/ Recirculation | Subaru Impreza WRX STI (08-14)/VAB (15+) (71008-KF013VB)
Regular price $360.28 USDRegular priceUnit price / per$382.80 USDSale price $360.28 USDSale -
COBB F&R Shifter Bush Pack 5-Speed | Subaru WRX (02-14)/Legacy GT/Forester XT/Outback XT (21132X)
Regular price $80.00 USDRegular priceUnit price / per$80.00 USDSale price $80.00 USD -
COBB Stage 1 Drivetrain Package | Subaru WRX STI (04-21) (215X01)
Regular price $285.00 USDRegular priceUnit price / per$285.00 USDSale price $285.00 USD -
COBB Stage 1+ Double Adj Drivetrain Package | Subaru WRX/Legacy GT/Outback XT/Forester XT 5MT (05-14) (214X01P-W-RD)
Regular price $320.00 USDRegular priceUnit price / per$320.00 USDSale price $320.00 USD -
COBB Stage 1 Drivetrain Package w/ Adj Shifter | Subaru WRX (08-14) / Legacy GT/Outback XT (05-09) / Forester XT 5MT (06-08) (214X01)
Regular price $235.00 USDRegular priceUnit price / per$235.00 USDSale price $235.00 USD -
COBB Stage 1+ Double Adj Short Throw Shifter Package | Subaru STI (04-21) (215X01P-W-RD)
Regular price $375.00 USDRegular priceUnit price / per$375.00 USDSale price $375.00 USD -
COBB Stage 2 Double Adj Short Throw Shifter w/F&R Bush & Reverse Lockout Pull | STI (04-21) (215X02-W-RD)
Regular price $405.00 USDRegular priceUnit price / per$405.00 USDSale price $405.00 USD -
Perrin Front Strut Brace | 2018-2021 Subaru Impreza/Crosstrek (PSP-SUS-058RD)
Regular price $182.21 USDRegular priceUnit price / per$352.00 USDSale price $182.21 USDSale -
Perrin Lightweight Water Pump Pulley - Red | 2015-2021 Subaru WRX (PSP-ENG-111RD)
Regular price $63.67 USDRegular priceUnit price / per$123.00 USDSale price $63.67 USDSale
Upgrade Your Subaru WRX/STI 2015-2021 with Performance Parts & Accessories
This collection is tailored specifically for Subaru WRX and STI models from 2015 to 2021, offering a range of aftermarket parts designed to enhance your car’s performance, handling, and style. Whether you want to sharpen your driving experience or customize your vehicle’s look, these components fit your WRX/STI with confidence.
Which performance upgrades make the biggest difference for WRX/STI handling?
Improving handling on your WRX/STI starts with suspension and brake upgrades that enhance control and responsiveness. Upgrading coilovers or sway bars can reduce body roll and improve cornering precision, while performance brake kits provide stronger, more consistent stopping power under aggressive driving conditions.
- Adjustable coilovers for customizable ride height and damping
- Upgraded sway bars to reduce chassis flex
- Big brake kits with larger rotors and multi-piston calipers
- High-performance brake pads for improved bite and fade resistance
How do engine and drivetrain parts boost your WRX/STI’s performance?
Aftermarket engine and drivetrain components can improve power delivery, reliability, and throttle response. Popular upgrades include enhanced intake and exhaust systems, upgraded clutches, and stronger mounts that reduce drivetrain movement. These parts work together to optimize your WRX/STI’s performance without compromising daily drivability.
What exterior and interior accessories help customize your WRX/STI?
Personalizing your Subaru WRX/STI goes beyond performance with a variety of styling and comfort upgrades. From aerodynamic aero kits and lighting enhancements to upgraded shift knobs and steering wheels, these accessories let you tailor your vehicle’s appearance and driving feel. Shop the Subaru WRX/STI 15-21 collection at WheelFlip to find parts that fit perfectly and elevate your build.











