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JE Pistons and Rings 99.75 Bore 79mm Stroke 9.5:1 Comp Subaru WRX/STI EJ257 2004-2019 | 310937
Regular price $1,561.00Regular priceUnit price per$1,561.00Sale price $1,561.00 -
JE Pistons 99.5mm Ring Sets - Universal | JC3104-3917
Regular price $242.00Regular priceUnit price per$242.00Sale price $242.00 -
Injen 15-17 STI Evolution Cold Air Intake | EVO1206
Regular price $765.00Regular priceUnit price per$765.00Sale price $765.00 -
Gates 170 Degree Thermostat Subaru WRX 2002-2014 / STI 2004-2019 | 34012
Regular price $34.00Regular priceUnit price per$34.00Sale price $34.00 -
Gates Micro-V Stretch A/C Belt Subaru WRX 2008-2014 / STI 2008-2019 | K040317SF
Regular price $37.00Regular priceUnit price per$37.00Sale price $37.00 -
ARP Moly Assembly Lube 1.69 oz - Universal | 100-9903
Regular price $13.00Regular priceUnit price per$19.00Sale price $13.00Sale -
aFe Filter Cleaning Kit Power Restore Kit 32 oz. Gold - Universal | 90-50520
Regular price $63.00Regular priceUnit price per$63.00Sale price $63.00 -
aFe Filter Cleaning Kit Power Restore Kit Squeeze Gold 16 oz. - Universal | 90-50500
Regular price $37.00Regular priceUnit price per$37.00Sale price $37.00 -
Torque Solution 08-14 WRX / 08-21 STI / 05-09 LGT Post MAF Silicone Intake Hose Black | TS-SU-009
Regular price $104.00Regular priceUnit price per$113.00Sale price $104.00Sale -
Torque Solution Throttle Body Hose Coupler Subaru WRX 2002-2007 / STI 2004-2019
Regular price $58.00Regular priceUnit price per$58.00Sale price $58.00 -
GrimmSpeed MAF Block Off - Subaru WRX/STI / Forester XT 2002-21 | 053001 / 053002
Regular price From $73.00Regular priceUnit price per$73.00Sale price From $73.00 -
GrimmSpeed 02-14 WRX / 04-21 STI / 05-12 LGT / 04-13 FXT Phenolic Thermal Spacer 8mm | 019001
Regular price $105.00Regular priceUnit price per$105.00Sale price $105.00 -
Perrin 08-14 WRX / 08-21 STI / 05-09 LGT Post MAF Hose Black | PSP-INT-355
Regular price $123.00Regular priceUnit price per$196.00Sale price $123.00Sale -
Perrin 08-21 Subaru WRX/STI / 05-09 LGT / 13-17 Crosstrek / 14-15 FXT Panel Filter | PSP-INT-110
Regular price $107.00Regular priceUnit price per$125.00Sale price $107.00Sale -
Perrin Coolant Hose Adapter - Universal | ASM-GAU-106
Regular price $55.00Regular priceUnit price per$65.00Sale price $55.00Sale -
Mishimoto 15-28 STI Race Intake Polished | I-STI-15R
Regular price From $375.00Regular priceUnit price per$421.00Sale price From $375.00Sale
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.