2021 Subaru WRX STI Mods, Upgrades & Accessories
WRX STI Upgrades by WRX STI Experts.
The 2021 STI was the last year of production for the VB STI, and thus far, the last remaining model for the US markets. This paused the 17-year run for the legendary EJ25 that remained as the heart of the STI. In Japan at the 2024 Tokyo Auto Salon, Subaru showcased a Special Edition WRX S4 STI Sport prototype that had been based on a JDM WRX S4 Sport Japanese model. It is currently rumored that the next generation of STI will be an all-electric version.
If that is confirmed, the 2021 STI will be the last combustion engine design (for now). Even still, the 2021 STI is still a rally-inspired AWD sedan that packs 300+ HP and has a rich performance aftermarket support system to make this car handle better, drive faster, while looking and sounding more aggressive. The Tomei Expreme Ti Cat-Back Exhaust features full titanium construction that will save a great amount of weight, while adding more horsepower and torque. The Faction Fab FL V2 Coilovers have a wide range of adjustment that include height, front camber settings, and damping stiffness to execute that preferred stance. And you can add more downforce by installing an APR Carbon Fiber Wind Splitter to reduce lift at higher speeds, while making your STI transform into race car mode.
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11 In Stock
694541A
Cusco Rear Strut Tower Brace Type OS - 2015-2021 Subaru WRX / STI
9 In Stock
20-0780-00
Radium Fuel Hanger (Pumps Not Included) - 2008-2014 Subaru WRX / 2015-2021 STI / 2005-2009 Legacy
4B8296H-STD
ACL Race Rod Bearings Standard Size Subaru EJ Models - 2015-2021 Subaru STI / 2000-2013 Forester / 1993-2014 Impreza
GrimmSpeed 4-Piston Brake Caliper Kit (340mm Rotor) - Gunmetal Gray - 2002-2021 Subaru WRX / STI
DarkMatterX E-Brake Boot - Black / Suede - 2008-2021 Subaru WRX / STI / 2013-2017 Crosstrek / 2009-2013 Forester / 2008-2010 Outback
5 In Stock
ASM-TAC-731
PERRIN EBCS Pro Boost Control Solenoid - 2015-2021 Subaru STI / 2008-2014 Impreza
HS05SW1HDP
Invidia Equal Length Big Piping Exhaust Manifold - 2002-2014 Subaru WRX / 2004-2021 STI / 2005-2009 Legacy GT
5 In Stock
A.70066.3
OLM LE Dry Carbon Fiber Front Emblem Frame Overlay - 2018-2021 Subaru WRX / STI
SMY IOI Hyperflash (RBL) / DRL Red Bar - 2015-2021 Subaru WRX/STI
49 In Stock
077044
GrimmSpeed 3in Downpipe to Stock Cat-Back Adapter - 2002-2021 Subaru Turbo EJ Engines
IAG-AFD-2611BK
IAG PTFE Flex Fuel System Kit w/ 1300cc Injectors, Lines, FPR, Black Fuel Rails - 2015-2021 Subaru STI
1 In Stock
11155-8
Manley Performance Race Master Stainless Steel Exhaust Valves - Subaru Models (inc. 2002-2005 Subaru WRX / 2004-2021 Subaru STI)
SUIM4WRXSTICNC-RSD1B+RSF1A
OLM x Maxton Design Racing Rear Splitter (Black) + Matte Wings - 2015-2021 Subaru WRX / STI
6 In Stock
PSP-ENG-550HP
PERRIN Performance Fender Shroud (Hyper Pink) - 2015-2021 Subaru WRX / STI
14 In Stock
128.47039
Stoptech Drilled Brake Rotor Single Rear - 2018-2021 Subaru STI
35 In Stock
15030-2100
Competition Clutch Stage 2 Steelback Brass Plus Clutch Kit - 2015-2021 Subaru STI / 2004-2014 Impreza
6 In Stock
PSP-BDY-252NY
PERRIN Performance Tow Hook Kit Rear (Neon Yellow) - 2008-2021 Subaru WRX / STI Sedan
31000090101
Boomba Racing White Delrin Weighted Shift Knob - 2015-2021 Subaru WRX / STI / 2004-2014 Impreza / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86
SB10-HDR6
ACT Heavy Duty Monoloc Rigid Race 6 Pad Clutch - 2004-2021 Subaru STI
4 In Stock
213320
COBB 6-Speed Front Shifter Bushing - 2015-2021 Subaru STI / 2004-2014 Impreza / 2007-2009 Legacy
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