2015-2021 WRX STI Mods

OVERVIEW The Verus Engineering Aggressive Rear Diffuser combines function, form, and science to deliver unparalleled fit, performance, and style t...

OVERVIEW The Verus Engineering Rear Suspension Covers complete your rear diffuser by feeding it clean, uninterrupted airflow.  These cover a large...

OVERVIEW The UCW rear wing is a great addition to your VA WRX to increase downforce significantly in the rear, increase confidence on track, and r...

SB10-HDG6 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clam...

SB10-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. ACT Heavy Duty pressure plates use exclusive diap...

SB10-HDG4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clam...

T1R-S07 Mod-Twin 225 HD Rigid Race Kit tackles aggressive launches and rapid shifting of high powered AWD’s by combining twice the ceramic friction...

T1S-S07 Mod-Twin 225 HD Rigid Street Kit blends easy pedal feel, smooth but positive engagement with quick shifting for high powered AWD’s by combi...

T1R-S05 Mod-Twin 225 HD Sprung Race Kit performs aggressive launches and smoother shifting in high powered AWD’s by combining twice the ceramic fri...

T1R-S05 Mod-Twin 225 HD Rigid Race Kit tackles aggressive launches and rapid shifting of high powered AWD’s by combining twice the ceramic friction...

T2R-S07 Mod-Twin 225 XT Rigid Race Kit tackles aggressive launches and rapid shifting of high powered AWD’s by combining twice the ceramic friction...

T2S-S07 Mod-Twin 225 XT Rigid Street Kit blends easy pedal feel, smooth but positive engagement with quick shifting for high powered AWD’s by combi...

T2R-S05 Mod-Twin 225 XT Sprung Race Kit performs aggressive launches and smoother shifting in high powered AWD’s by combining twice the ceramic fri...

T2S-S05 Mod-Twin 225 HD Sprung Street Kit is designed for high powered AWD street cars. It unites uncompromised pedal feel, durability, engagement ...

Increase your vehicle’s cargo-carrying capabilities by adding a crossbar set. These fixed-style crossbars can be installed or removed in minutes. M...

NASA, SCCA, POC, PCA, Time Attack For popular track oriented cars which meet or exceeds the requirements of numerous sanctioning bodies such as SCC...

Stay Ahead Of Your Competition With The AMS Subaru WRX / STI Intake Manifold! The AMS Subaru Intake Manifold was designed to outperform the competi...

The Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX/STI when perfect aesthetics ...

The Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX/STI when perfect aesthetics ...

The Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX/STI when perfect aesthetics ...

The Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX/STI when perfect aesthetics ...

Designed for the MY15+ FA20DIT WRX the Process West ‘DITTO’ (Direct Injection Tubular Original) compromises a mix of billet plenum and cast large b...

Designed for the MY15+ FA20DIT WRX the Process West ‘DITTO’ (Direct Injection Tubular Original) compromises a mix of billet plenum and cast large b...

The CNC Billet Aluminum EJ case seeks to change the Subaru performance tuning market by reinventing the EJ and addressing virtually every weakness ...

IAG 950 LONG BLOCK ENGINE WITH IAG 950 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT A "DROP-IN" SOLUTION The IAG Perform...

IAG 750 LONG BLOCK ENGINE WITH IAG 750 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT A "DROP-IN" SOLUTION The IAG Perfor...

IAG 550 LONG BLOCK ENGINE WITH IAG 550 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT A "DROP-IN" SOLUTION The IAG Perf...

The IAG Performance V3 Street Series Air / Oil separator (AOS) is an excellent investment to keep your Subaru vehicle running well. The Street Seri...

IAG PTFE FLEX FUEL SYSTEM KIT W/ ID INJECTORS, AEROMOTIVE FPR, IAG FUEL RAILS FOR 2008-14 WRX, 08-21 STI FUEL DELIVERY MADE EASY ...

IAG PTFE FUEL SYSTEM KIT W/ ID INJECTORS, AEROMOTIVE FPR, IAG FUEL RAILS FOR 2008-14 WRX, 08-21 STI FUEL DELIVERY MADE EASY Whe...

IAG PTFE FLEX FUEL SYSTEM KIT W/ AEROMOTIVE FPR, IAG FUEL RAILS FOR 08-14 WRX, 08-21 STI FUEL DELIVERY MADE EASY When designing ...

AG PTFE FUEL SYSTEM KIT W/ AEROMOTIVE FPR, IAG FUEL RAILS FOR 08-14 WRX, 08-21 STI FUEL DELIVERY MADE EASY When designing the IA...

Planted Seat Bracket- Subaru WRX/STI (2015-2021) The Planted Seat Bracket is a vehicle specific bracket used as an adapter between the floor of the...

Planted Seat Bracket- Subaru WRX/STI (2015-2021) The Planted Seat Bracket is a vehicle specific bracket used as an adapter between the floor of the...

The 1-piece driveshaft for the 2015+ Subaru WRX is a complete 2.75″ Carbon Fiber shaft. The 1-piece carbon shaft features larger, replaceable u-joi...

DESCRIPTION The Faction Fab Front Sway Bar is a cost-effect solution to set your car up for a balanced grip and reduced body roll when cornering. W...