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Mishimoto 15-21 STI Front Mount Intercooler Gold w/ Intake | MMINT-STI-15AIG
Regular price $2,524.00Regular priceUnit price per$2,524.00Sale price $2,524.00 -
HKS 15-21 Subaru WRX/STI Hi-Power SPEC-L II Catback Exhaust w/ Burnt Tips | 31019-AF130
Regular price $2,071.00Regular priceUnit price per$2,436.00Sale price $2,071.00Sale -
IAG Performance 08-14 WRX / 08-21 STI Flex Fuel Line Upgrade Kit | IAG-AFD-2203
Regular price $189.00Regular priceUnit price per$189.00Sale price $189.00 -
Cusco 02-14 WRX / 04-21 STI / 05-09 LGT Aluminum Pulley Set | 6A1-733-A
Regular price $474.00Regular priceUnit price per$474.00Sale price $474.00 -
Kartboy 02-14 WRX / 04-21 STI / 94-09 Legacy / 98-13 Forester Aluminum Single Belt Crank Pulley | KB-050-EJ-S
Regular price $215.00Regular priceUnit price per$215.00Sale price $215.00 -
GSC Power-Division 02-14 WRX / 04-21 STI Super Alloy Exhaust Valves +1 | 2017-8
Regular price $364.00Regular priceUnit price per$364.00Sale price $364.00 -
GSC Power-Division 08-21 STI S3 Billet Camshaft Set | 7026S3
Regular price $2,137.00Regular priceUnit price per$2,137.00Sale price $2,137.00 -
Nameless Performance 2018 STI Type RA / 19-21 STI Axle Back w/ Single Wall Polished Tips and 5" Mufflers | SUAB19STI-5MU-35SSW
Regular price $1,071.00Regular priceUnit price per$1,071.00Sale price $1,071.00 -
Nameless Performance 2018 STI Type RA / 19-21 STI Axle Back 3" Double Wall Polished Tips | SUAB19STI-0MU-30SDW
Regular price $712.00Regular priceUnit price per$712.00Sale price $712.00 -
Torque Solution 02-07 WRX / 04-21 STI / 04-08 FXT 3 Inch Recirculating Style Turbo Inlet Hose - Black | TS-SU-565-R
Regular price $417.00Regular priceUnit price per$496.00Sale price $417.00Sale -
Fuel Injector Clinic 02-14 WRX / 07-21 STI Injectors Top Feed 1440cc | IS175-1440H
Regular price $1,405.00Regular priceUnit price per$1,405.00Sale price $1,405.00 -
Nameless Performance 15-21 Subaru WRX / 15-18 STI w/ SPT midpipe Axle Back 3.5" Single Wall Neochrome Tips | SUABSPT-35NEO
Regular price $980.00Regular priceUnit price per$980.00Sale price $980.00 -
Killer B Motorsport 02-14 WRX / 04-21 STI 4-1 Max VE Holy Header Exhaust Manifold 2 Bolt | HH-2BOLT-VE
Regular price $2,743.00Regular priceUnit price per$2,743.00Sale price $2,743.00 -
Nameless Performance 2018 STI Type RA / 19-21 STI Axle Back w/ Single Wall Neochrome Tips and 5" Mufflers | SUAB19STI-5MU-35NEO
Regular price $1,146.00Regular priceUnit price per$1,146.00Sale price $1,146.00 -
Nameless Performance 15-21 Subaru WRX / 15-18 STI Axle Back 3.5" Single Wall Polished Tips | SUAB15WRX-0MU-35SSW
Regular price $788.00Regular priceUnit price per$788.00Sale price $788.00 -
Nameless Performance 2018 STI Type RA / 19-21 STI Axle Back Single Wall 3.5" Polished Tips | SUAB19STI-0MU-35SSW
Regular price $788.00Regular priceUnit price per$788.00Sale price $788.00
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.