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iBR FLX01 - Upgrade Kit (3 Pin and 5 Pin Harnesses)
Regular price $399.99Regular priceUnit price per$399.99Sale price $399.99 -
Grimmspeed 02-07 WRX/ 04-21 STI/ 04-08 FXT Top Mount Intercooler - Silver | 090001
Regular price $719.00Regular priceUnit price per$719.00Sale price $719.00 -
Cobb Subaru WRX/STI/FXT 4 Bar MAP Sensor *Sensor Only* | A12100
Regular price $175.00Regular priceUnit price per$175.00Sale price $175.00 -
IAG Subaru STI Big Bore 76mm Throttle Body w/ Electronics & Adapter Package Process West Intake Manifolds | IAG-AFD-2028SL
Regular price $379.99Regular priceUnit price per$379.99Sale price $379.99 -
IAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550NE
Regular price $2,999.99Regular priceUnit price per$2,999.99Sale price $2,999.99 -
Turbo XS WRX/STi 3in Downpipe to OEM Cat-Back Adapter w/OEM Donut Gasket | ADA-3DP-OEMCB-2
Regular price $52.88Regular priceUnit price per$73.00Sale price $52.88Sale -
IAG 08-14 WRX/08-21 STI PTFE Fuel Line Kit | IAG-AFD-2215
Regular price $449.99Regular priceUnit price per$449.99Sale price $449.99 -
Cobb 04-20 STI 6MT Stage 2+ Drivetrain Package w/Weighted Black Knob + Race Red Lockout | 215X02P-WK-BK-RDBK
Regular price $450.00Regular priceUnit price per$450.00Sale price $450.00 -
Beatrush 08-14 WRX / 08-21 STI Aluminum Pulley Cover | S146020PC
Regular price $105.00Regular priceUnit price per$123.00Sale price $105.00Sale -
Mishimoto 08-14 WRX / 08-21 STI Performance Aluminum Radiator Manual Transmission | MMRAD-STI-08
Regular price $372.95Regular priceUnit price per$372.95Sale price $372.95 -
Mishimoto 08-21 Subaru WRX/STI Aluminum Coolant Overflow Tank - Polished | MMRT-STI-08
Regular price $210.95Regular priceUnit price per$210.95Sale price $210.95 -
Killer B Motorsport Cast Aluminum High Flow Water Pump Housing EJ Series Powder Coat Black Subaru WRX 2004-2014 / STI 2004-2020 / Forester XT 2004-2013 / Outback XT 2004-2009 / Legacy GT 2004-2009 | WPHV2-B
Regular price $164.00Regular priceUnit price per$164.00Sale price $164.00 -
Subaru JDM 02-14 WRX / 04-21 STI / 05-12 LGT / 05-09 Outback XT / 04-13 FXT 2.5L 12mm Oil Pump | 15010AA310
Regular price $174.88Regular priceUnit price per$299.95Sale price $174.88Sale -
Mishimoto 08-14 WRX / 08-21 STI Silicone Radiator Hose Kit Neon Yellow | MMHOSE-STI-08NY
Regular price $161.66Regular priceUnit price per$218.67Sale price $161.66Sale -
Killer B Motorsport High Flow Water Pump Housing V2 Subaru Models (inc. 2002-2014 WRX/STI) | WPHV2
Regular price $153.00Regular priceUnit price per$153.00Sale price $153.00 -
REMARK R1 Catback Exhaust - Subaru WRX/STI (GR Hatchback) 08-14, Titanium | RK-C1076S-02T
Regular price $715.88Regular priceUnit price per$855.00Sale price $715.88Sale
Optimize your Subaru STI 2008-2014 engine's performance with a comprehensive range of top-quality aftermarket parts from industry-leading brands. Elevate the power and efficiency of your vehicle with ETS, HKS, Perrin, Mishimoto, AMS, Grimmspeed, Cobb, Remark, PLM, Turbosmart, IAG Performance, and more. Enhance airflow and filtration through AIR INTAKE DUCTS and COLD AIR INTAKES, while maintaining engine cleanliness with AIR OIL SEPARATORS and CATCH CANS. Experience impeccable control and responsiveness with BLOW OFF VALVES and BOOST CONTROL SOLENOID COVERS, complemented by the reliability of ENGINE MOUNTS and meticulously crafted ENGINE MANAGEMENT HARNESSES. Simplify maintenance and improve overall performance with DIPSTICKS and explore comprehensive ENGINE PACKAGE DEALS for a holistic approach to upgrading your Subaru WRX's engine. Unleash the full potential of your vehicle through precision-engineered components designed to deliver both power and durability, all meticulously designed to give your Subaru STI the edge on the road or track.