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Process West 08-21 STI Boost Soleniod Cover Black | PWED01B
Regular price $45.31Regular priceUnit price per$45.31Sale price $45.31 -
IAG Performance 02-14 WRX / 07-21 STI / 08-12 LGT / 06-13 FXT V3 Top Feed Fuel Rails Gold | IAG-AFD-2102GD
Regular price $199.99Regular priceUnit price per$199.99Sale price $199.99 -
Kartboy 02-14 WRX / 04-21 STI / 05-09 Legacy / 03-13 Forester Aluminum Crank Pulley V2 | KB-050-EJ-V2
Regular price $100.00Regular priceUnit price per$100.00Sale price $100.00 -
Torque Solution 02-07 WRX / 04-21 STI / 04-08 FXT 3 Inch Non Recirculating Style Turbo Inlet Hose Black | TS-SU-565-NR
Regular price $242.88Regular priceUnit price per$288.88Sale price $242.88Sale -
Nameless Performance 15-21 Subaru WRX / 15-18 STI Axle Back Exhaust w/ 3.5" Single Wall Neochrome Tips and 5" Mufflers | SUAB15WRX-5MU-35NEO
Regular price $668.00Regular priceUnit price per$668.00Sale price $668.00 -
IAG 02-14 WRX / 04-21 STI / 05-12 LGT / 04-13 FXT Black Timing Belt Kit w/ OEM Tensioner / Idlers and IAG Guide | IAG-ENG-5131BK
Regular price $449.00Regular priceUnit price per$449.00Sale price $449.00 -
IAG Performance 08-14 WRX / 08-21 STI V2 Street Series AOS Replacement Hose Line & Hardware Install Kit | IAG-RPL-7151IK
Regular price $219.99Regular priceUnit price per$219.99Sale price $219.99 -
IAG Performance 10-21 Subaru WRX/STI / 05-13 Legacy / 04-14 Impreza / 04-13 Forester / 05-09 Outback Cooper Ring Head Gasket Pair EJ25 100MM Bore .051 Inch Thickness w/ 1/2 Inch or 11MM Head Studs | IAG-ENG-1731P
Regular price $249.99Regular priceUnit price per$249.99Sale price $249.99 -
Subaru OEM Serpentine Belt 2010-21 STI | 809218460
Regular price $31.25Regular priceUnit price per$31.25Sale price $31.25 -
Remark 15-21 Subaru WRX/STI BOSO Edition Axle Back w/ Polished Tips | RO-TSVA-SL
Regular price $455.00Regular priceUnit price per$455.00Sale price $455.00 -
Subaru OEM Outer Middle Timing Cover Most Turbo Subaru Models | 13570AA045
Regular price $38.23Regular priceUnit price per$38.23Sale price $38.23 -
IAG Performance 02-07 WRX / 04-21 STI Replacement Blow Off Valve Elbow Silver | IAG-ENG-5012SL
Regular price $59.99Regular priceUnit price per$59.99Sale price $59.99 -
Subaru OEM Oil Return Hose EJ25 Turbo Models | 807515712
Regular price $12.92Regular priceUnit price per$12.92Sale price $12.92 -
IAG Performance 02-07 WRX / 04-21 STI Blow Off Valve Adapter | IAG-ENG-5011
Regular price $54.99Regular priceUnit price per$54.99Sale price $54.99 -
Mishimoto 02-07 WRX / 04-21 STI Aluminum Coolant Expansion Tank Black | MMRT-WRX-01EBK
Regular price $164.95Regular priceUnit price per$164.95Sale price $164.95 -
iBR FLX01 - Upgrade Kit | 3 Pin and 5 Pin Harnesses
Regular price $399.99Regular priceUnit price per$399.99Sale price $399.99
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.