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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S020-T-TS
ISC Suspension V2 N1 Track/Race Coilover Kit (With Triple S Upgraded Coilover Springs) - 2015-2021 Subaru WRX / STI
4 In Stock
6A1492RE
Cusco Rear End Power Brace - 2015-2021 Subaru WRX / STI
S22SB-UN-RFL-V3-SB1(15-21)
OLM Vector F1 Light - Smoke Lens / White Bar - 2015-2021 Subaru WRX / STI
LFR7AIX
NGK Iridium One Step Colder 2309 Spark Plug (Single) - 2006-2014 Subaru WRX / 2004-2021 STI
SUB-019-TI-BLU
Dress Up Bolts Titanium Hardware Trunk Kit (Blue) - 2015-2021 Subaru WRX / STI
18 In Stock
1300.48.11.WRX.4
Injector Dynamics Fuel Injectors 1300cc - 2015-2021 Subaru STI / 2006-2008 Forester / 2002-2014 Impreza
27 In Stock
PSP-SUS-056NY
PERRIN Front Strut Tower Brace (Neon Yellow) - 2002-2024 Subaru WRX / 2004-2021 STI
11 In Stock
PSP-OIL-110
PERRIN Oil Cooler Kit - 2002-2024 Subaru WRX / 2004-2021 STI
ST499
OLM LE Dry Carbon Fiber JDM DRL Facelift Bezel Cover (No Fog Hole) - 2018-2021 Subaru WRX / STI
6 In Stock
20-0629-05
Radium Fuel Plumbing Kit Microglass - 2008-2014 Subaru WRX / 2015-2021 STI / 2005-2009 Legacy
65 In Stock
HD15SBIMP-CW
Seibon CW-Style Carbon Fiber Hood - 2015-2021 Subaru WRX / STI
4 In Stock
PSP-INR-132-3
PERRIN Ball Shift Knob - 2015-2024 Subaru WRX / 2015-2021 STI
TA4070-SB02D
Tomei Head Gaskets 101.0 Bore 1.5MM Thickness - Subaru Models (Inc. 2006-2014 Subaru WRX / 2004-2021 STI)
1 In Stock
190040B
Manley Performance Turbo Tuff Series Crankshaft 79mm Subaru EJ25 Models - Subaru Models (inc. 2006-2014 Subaru WRX / 2004-2021 Subaru STI)
GRM1.1029.1.RED
GrimmSpeed Strut Bar - Red - 2015-2021 Subaru WRX / STI
OVERTAKE Exhaust Manifold Refresh Kit - 2002-2026 Subaru WRX / 2004-2021 STI / 2013-2026 Scion FR-S / Subaru BRZ / Toyota GR86/86
19 In Stock
PSP-INT-326RD
PERRIN Cold Air Intake (Red) - 2018-2021 Subaru STI
10 In Stock
FL18SBIMP-MB3
Seibon MB3-Style Carbon Fiber Front Lip - 2018-2021 Subaru WRX / STI
001000120000
Boomba Racing Aluminum Oil Cap Natural - Subaru Models (inc. 2002-2021 WRX / STI)
13 In Stock
YAB-WRX-0286SBC
OLM Spec CR Sequential Tail Lights - Smoked Lens, Black Base, Clear Running Light - 2015-2021 Subaru WRX / STI
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