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HKS 15-21 STI Dry Carbon Suction Kit | 70026-AF001
Regular price $1,114.00Regular priceUnit price per$1,114.00Sale price $1,114.00 -
Subaru OEM Front Crossover Gasket EJ20 / EJ25 | 44022AA160
Regular price $35.00Regular priceUnit price per$35.00Sale price $35.00 -
Nameless Performance 15-21 Subaru WRX / 15-18 STI Axle Back w/ 4" Double Wall Polished Tips and 5" Mufflers | SUAB15WRX-5MU-40SDW
Regular price $1,324.00Regular priceUnit price per$1,324.00Sale price $1,324.00 -
Nameless Performance 15-21 Subaru WRX / 15-18 STI Axle Back Exhaust w/ 3" Double Wall Polished Tips and 4" Mufflers | SUAB15WRX-4MU-30SDW
Regular price $994.00Regular priceUnit price per$994.00Sale price $994.00 -
Nameless Performance 15-21 Subaru WRX / 15-18 STI Axle Back Exhaust w/ 3.5" Single Wall Neochrome Tips and 4" Mufflers | SUAB15WRX-4MU-35NEO
Regular price $1,145.00Regular priceUnit price per$1,145.00Sale price $1,145.00 -
IAG 02-14 WRX / 04-21 STI / 05-12 LGT / 04-13 FXT Black Racing Timing Belt | IAG-ACC-5206BK
Regular price $394.00Regular priceUnit price per$394.00Sale price $394.00 -
Turbo XS 08-21 STI 20G Turbocharger | TU-EJ-TXS400
Regular price $2,260.00Regular priceUnit price per$2,260.00Sale price $2,260.00 -
COBB 19-21 STI / 2018 STI Type RA NexGen Stage 2 + Flex Fuel Power Package w/ Black Intake | SUB004NG2S2FF-BK
Regular price $7,065.00Regular priceUnit price per$7,065.00Sale price $7,065.00 -
COBB 15-21 STI Previous Ethanol Sensor to NexGen Fuel Ethanol Sensor Kit | Module + Harness Only | 315670
Regular price $848.00Regular priceUnit price per$848.00Sale price $848.00 -
IAG Performance 02-14 WRX / 04-21 STI / 05-12 LGT / 04-13 FXT 3mm Thick Phenolic Spacers | IAG-AFD-3103
Regular price $112.00Regular priceUnit price per$112.00Sale price $112.00 -
Nameless Performance 15-21 Subaru WRX / 15-18 STI Axle Back 3" Double Wall Polished Tips | SUAB15WRX-0MU-30SDW
Regular price $711.00Regular priceUnit price per$711.00Sale price $711.00 -
IAG Performance 08-14 WRX / 08-21 STI 3 Inch Aluminum MAF Mounting Flange | IAG-AFD-1001
Regular price $69.00Regular priceUnit price per$69.00Sale price $69.00 -
Nameless Performance 15-21 Subaru WRX / 15-18 STI Axle Back Exhaust w/ 3.5" Double Wall Polished Tips and 4" Mufflers | SUAB15WRX-4MU-35SDW
Regular price $1,324.00Regular priceUnit price per$1,324.00Sale price $1,324.00 -
Nameless Performance 15-21 Subaru WRX / 15-18 STI Track Package Catback W/ Raw Tip | SUCB15WRXTP-NOTIP
Regular price $1,222.00Regular priceUnit price per$1,222.00Sale price $1,222.00 -
ETS 15-21 Subaru WRX/STI Catback Exhaust Rear Section Replacement Muffled w/ Polished Tips | 200-30-EXH-016
Regular price $1,448.00Regular priceUnit price per$1,448.00Sale price $1,448.00 -
IAG Performance 08-14 WRX / 08-21 STI V3 Street Series Air / Oil Separator | AOS Replacement Line / Hardware Kit | IAG-RPL-7181IK
Regular price $377.00Regular priceUnit price per$377.00Sale price $377.00
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.