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COBB 15-21 STI NexGen Stage 1 to Stage 2 + Flex Fuel Power Package Upgrade w/ Redline Carbon Fiber Intake | SUB004NG2S2FF-RED-S1-UP
Regular price $4,029.95Regular priceUnit price per$4,029.95Sale price $4,029.95 -
COBB 15-18 STI NexGen Stage 1 to Stage 2 + Flex Fuel Power Package Upgrade w/ Black Intake | SUB004NG2S1FF-S1-UP-BK
Regular price $3,500.00Regular priceUnit price per$3,500.00Sale price $3,500.00 -
COBB 19-21 STI / 18 STI Type RA NexGen Stage 1 to Stage 2 + Flex Fuel Power Package Upgrade w/ Blue Intake | SUB004NG2S2FF-S1-UP-BL
Regular price $3,525.00Regular priceUnit price per$3,525.00Sale price $3,525.00 -
COBB 19-21 STI / 18 STI Type RA NexGen Stage 1 to Stage 2 + Flex Fuel Power Package Upgrade w/ Black Intake | SUB004NG2S2FF-S1-UP-BK
Regular price $3,525.00Regular priceUnit price per$3,525.00Sale price $3,525.00 -
COBB 15-21 STI NexGen Flex Fuel Ethanol Sensor Kit | 325650
Regular price $725.00Regular priceUnit price per$725.00Sale price $725.00 -
COBB 08-21 STI / 08-14 WRX / 09-13 FXT / 07-12 LGT EJ TGV Shaft Seal Kit | 443700
Regular price $70.00Regular priceUnit price per$70.00Sale price $70.00 -
Subaru OEM 21 STI/ 21-25 Subaru WRX/ 21-23 Crosstrek/ 21-23 Impreza Battery Tie Down Blue | SOA3881270
Regular price $83.95Regular priceUnit price per$83.95Sale price $83.95 -
IAG 02-14 WRX/04-21 STI/04-13 FXT/05-12 LGT Timing Guide, Comp Tensioner & Red Racing Timing Belt Kit | IAG-ENG-5130
Regular price $799.99Regular priceUnit price per$799.99Sale price $799.99 -
IAG 02-14 WRX/04-21 STI/04-13 FXT/05-12 LGT Red Racing Timing Belt | IAG-ACC-5206
Regular price $229.99Regular priceUnit price per$229.99Sale price $229.99 -
IAG 02-14 WRX/04-21 STI/05-12 LGT/04-13 FXT Timing Belt Kit with IAG Red Racing Belt, Timing Guide, Adjustable Idlers & Tensioner | IAG-ENG-5132RD
Regular price $629.99Regular priceUnit price per$629.99Sale price $629.99 -
IAG Performance Valve Spring Set w/ Titanium Retainers EJ20 / EJ25 | IAG-ENG-3202
Regular price $249.99Regular priceUnit price per$249.99Sale price $249.99 -
IAG STI Big Bore 76mm Throttle Body w/ Electronics & Adapter Intake Manifolds | IAG-AFD-2027BK
Regular price $379.99Regular priceUnit price per$379.99Sale price $379.99 -
IAG STI Big Bore 76mm Throttle Body w/ Electronics & Adapter Package Process West Intake Manifolds | IAG-AFD-2028BK
Regular price $379.99Regular priceUnit price per$379.99Sale price $379.99 -
IAG 02-14 WRX/04-21 STI Timing Belt Kit with IAG Black Racing Belt, Timing Guide, Adjustable Idlers & Tensioner | IAG-ENG-5132BK
Regular price $629.99Regular priceUnit price per$629.99Sale price $629.99 -
IAG 08-14 WRX/08-21 STI PTFE Fuel System Kit w/ Aeromotive FPR, IAG Fuel Rails | IAG-AFD-2350BK
Regular price $999.99Regular priceUnit price per$999.99Sale price $999.99 -
Turbo XS 02-14 WRX/04-21 STi/ 05-09 LGT / 04-13 FXT Up-Pipe Hardware Kit | WS-UP-HW
Regular price $20.88Regular priceUnit price per$29.00Sale price $20.88Sale
Optimize your Subaru STI 2015-2021 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.