2020 Subaru WRX STI Mods, Upgrades & Accessories
WRX STI Upgrades by WRX STI Experts.
It’s been 16 years since the debut of the 2004 Subaru STI, and for 2020, the heart of the engine remains as the EJ25, or EJ257 to be specific. Yet we have learned so much about this platform in terms of what are the strong points, and mainly what are the weak points. Like any turbocharged performance vehicle, the key ingredients to more bolt-on power are the basic power upgrades such as an intake and an exhaust system, fuel upgrades to supplement the power, and a proper tune to make sure everything is leveled out so that your ECU is happy throughout the entire RPM range.
Yet none of these upgrades are relevant if you don’t take care of the other supporting modifications. We have learned in all Subaru boxer engines how important an Air Fuel Separator is. In your stock PCV system, oil and vapors will coat your intake valves, cylinder walls, and piston tops with carbon that lowers your gasoline octane ratings. This leads to detonation issues as a lower octane reading creates a leaner condition. Make sure that you upgrade your turbo inlet hose because the OEM rubber inlet hose will crack and/or tear because of the multiple heat cycles and engine vibrations. Our selection features multi-layer silicone construction that is much stronger. And speaking of engine vibrations, your OEM pitch stop is prone to breaking. Anytime you perform engine upgrades that increase the torque will also increase the engine movement. A COBB Tuning Pitch Stop is made using stronger materials and construction to provide you with long-lasting performance. These upgrades should be performed right off the bat once these cars rolled out of dealerships. If not, now is a good time to do so.
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1 In Stock
RSPD081
Nameless Performance Axle Back Muffler Delete - 2019-2021 Subaru STI
1 In Stock
308.13650
Stoptech Street Front Brake Pads - 2018-2020 Subaru STI
IAG-ENG-1611
IAG Performance / Willall Stage X 2.5L Subaru Billet Aluminum Short Block - Subaru Models (Inc. 2002-2014 Subaru WRX / 2004-2021 STI / 2004-2013 Forester)
19 In Stock
504-895-6535GM
Enkei GTC01RR Matte Gunmetal 18x9.5 +35mm 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester
78 In Stock
RO-TSVA-S4
Greddy Remark Axleback Exhaust 4in Tip - 2015-2021 Subaru WRX / STI
2 In Stock
6A1035A
Cusco Intercooler Protection Net - 2015-2021 Subaru STI / 2008-2014 Impreza
71 In Stock
A.70217.1-RD
OLM Signature Series Ebrake Handle (Black Carbon w/Red) - 2015-2021 Subaru WRX / STI / 2014-2018 Forester / 2013-2017 Crosstrek / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2020 Toyota 86
50 In Stock
113072
Grimmspeed Hood Struts - High Lift - 2015-2024 Subaru WRX / 2015-2021 STI
83472FJ000VH
Interior Switch Panel
801000000
Subaru OEM Downpipe to Turbo Exhaust Stud - 2015-2021 Subaru STI / 2004-2013 Forester / 2002-2014 Impreza
VASU-204
Varis Arising II FRP + Carbon Shroud Side Skirts - 2015-2017 Subaru WRX/STI
5 In Stock
TS-SU-HKS
Torque Solution HKS BOV Adapter Flange - 2015-2021 Subaru STI / 2002-2014 Impreza
72324FJ020-KIT
Subaru Matte Black AC Knob Full Replacement - 2015-2021 Subaru WRX / STI / 2014-2018 Forester / 2013-2017 Crosstrek
7728.320
Eibach Anti Roll Front and Rear Sway Bar Kit - 2015-2021 Subaru STI
ISCS012CA-V3-B
ISC Suspension V3 Control Arms in Stealth Black Finish - 2015-2024 Subaru WRX / 2015-2021 STI / 2009-2017 Forester / 2008-2014 Impreza / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86
123000
GrimmSpeed Turbocharger Oil Feed Line Kit for Aftermarket Turbos - 2002-2014 Subaru WRX / 2004-2021 STI
DarkMatterX Shift Boot - Slate Grey / Alcantara / Red Stitching - 2015-2021 Subaru STI
005460C
ChargeSpeed Carbon Fiber Grille Finisher - 2018-2021 Subaru WRX / STI
15+BLU-WRX
Move Over Racing Bumper Quick Release Kit - 2015-2021 Subaru WRX / STI
84 In Stock
1.10297.1
FactionFab V2 Dual Drilled 5x100/114 Slotted Rear Rotor - 2018-2021 Subaru STI
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