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GrimmSpeed 02-14 WRX / 04-21 STI Alternator Cover Hi-Vis Neon Yellow | 099050
Regular price $99.00Regular priceUnit price per$99.00Sale price $99.00 -
GrimmSpeed Radiator Shroud - Neon Green Powdercoat Subaru WRX/STI 15+| 096056
Regular price $99.00Regular priceUnit price per$99.00Sale price $99.00 -
Injen 15-17 STI Cold Air Intake w/ MR Tech and Heat Shield | SP1206BLK
Regular price $378.95Regular priceUnit price per$378.95Sale price $378.95 -
Injen 15-17 STI Cold Air Intake w/ MR Tech and Heat Shield - Polished | SP1206P
Regular price $378.95Regular priceUnit price per$378.95Sale price $378.95 -
Injen 15-17 STI Cold Air Intake Wrinkle Red | SP1206WR
Regular price $378.95Regular priceUnit price per$378.95Sale price $378.95 -
HKS 15-21 Subaru WRX/STI Legamax Premium Catback Exhaust | 31021-BF001
Regular price $1,309.00Regular priceUnit price per$1,540.00Sale price $1,309.00Sale -
MXP 15-21 Subaru WRX/STI SP Cat Back Exhaust Stainless Steel Burnt Tips | MXSPGVB
Regular price $1,150.20Regular priceUnit price per$1,575.00Sale price $1,150.20Sale -
BLITZ NUR-SPEC VS CAT-BACK EXHAUST Subaru WRX/STI 15-21 | 62136
Regular price $1,350.00Regular priceUnit price per$1,740.00Sale price $1,350.00Sale -
MILLTEK SPORT CAT-BACK EXHAUST Subaru WRX/STI 15-21 | SSXSB49
Regular price $2,119.00Regular priceUnit price per$2,119.00Sale price $2,119.00 -
Borla 15-21 Subaru WRX/STI S-Type Cat Back Exhaust w/ Ceramic Black Steel Tips | 140595CB
Regular price $1,832.99Regular priceUnit price per$2,052.99Sale price $1,832.99Sale -
aFe 15-17 STI Power Takeda Performance Oiled 5-Layer Filter Intake System | TA-4306B-R
Regular price $395.00Regular priceUnit price per$395.00Sale price $395.00 -
aFe 15-17 STI Power Takeda Performance Dried 3-Layer Filter Intake System | TA-4306B-D
Regular price $408.00Regular priceUnit price per$510.00Sale price $408.00Sale -
Fuel Injector Clinic 02-14 WRX / 07-21 STI Injectors Top Feed 775cc | IS175-0775H
Regular price From $410.00Regular priceUnit price per$410.00Sale price From $410.00 -
Fuel Injector Clinic Complete Universal Seal Kit for 4 Cyl Injectors w/14mm Seals / SLK UNIV 14mm x 4
Regular price $24.50Regular priceUnit price per$25.00Sale price $24.50Sale -
Fuel Injector Clinic Complete Universal Seal Kit for 6 Cyl Injectors w/14mm Seals / SLK UNIV 14mm x 6
Regular price $27.44Regular priceUnit price per$28.00Sale price $27.44Sale -
ETS Stock Turbo Front Mount Intercooler Kit 3.5" Core | 15-21 Subaru STI | 200-30-IC + ICP
Regular price From $1,654.00Regular priceUnit price per$1,654.00Sale price From $1,654.00
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.