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ACL +005 O/S Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Crankshaft Main Bearing Set | 5M8309HO/S5-STD
Regular price $122.88Regular priceUnit price per$122.88Sale price $122.88 -
ACL +002 O/S Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Crankshaft Main Bearing Set | 5M8309HO/S2-STD
Regular price $114.88Regular priceUnit price per$114.88Sale price $114.88 -
Aluminati 02-25 Subaru WRX / 04-21 STI Battery Tie Down | ALM-BAT-TIE
Regular price $47.98Regular priceUnit price per$47.98Sale price $47.98 -
IAG Performance 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT Blemished EJ Competition Series Oil Pan | Black / Condition B09 | BLEM-ENG-2203BK-B09
Regular price $599.99Regular priceUnit price per$599.99Sale price $599.99 -
IAG Performance 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT Blemished EJ Street Series Oil Pan | Black / Condition B07 | BLEM-ENG-2200BK-B07
Regular price $479.99Regular priceUnit price per$479.99Sale price $479.99 -
IAG Performance 02-14 WRX / 04-21 STI / 05-09 LGT / 04-13 FXT Blemished EJ Street Series Oil Pan | Black / Condition B09 | BLEM-ENG-2200BK-B09
Regular price $499.99Regular priceUnit price per$499.99Sale price $499.99 -
Cobb 15-18 STI NexGen Stage 2 + Flex Fuel Power Package - Blue | SUB004NG2S1FF-BL
Regular price $4,125.00Regular priceUnit price per$4,125.00Sale price $4,125.00 -
Cobb 15-18 STI NexGen Stage 2 + Flex Fuel Power Package - Black | SUB004NG2S1FF-BK
Regular price $4,125.00Regular priceUnit price per$4,125.00Sale price $4,125.00 -
Perrin Performance 15-21 STI Front Mount Intercooler Kit | PSP-ITR-KIT6-SLBK
Regular price $2,479.45Regular priceUnit price per$2,917.00Sale price $2,479.45Sale -
MBRP 15-21 Subaru WRX 2.0L/STI 2.5L 3in Dual Split Rear Exit w/ 3.5" Tips - T304 | Street Version | S4800304
Regular price $999.99Regular priceUnit price per$1,198.22Sale price $999.99Sale -
Wiseco EJ257 WRX/STI 4v Dish -19cc 100mm Piston Shelf Stock | 6598M100
Regular price $201.99Regular priceUnit price per$201.99Sale price $201.99 -
MBRP 15-21 Subaru WRX 2.0L/STI 2.5L 3in Dual Split Rear Exit w/ 3.5" CF Tips - T304 | Street Version |
Regular price $1,089.99Regular priceUnit price per$1,309.40Sale price $1,089.99Sale -
MBRP 15-21 Subaru WRX 2.0L/STI 2.5L 3in Dual Split Rear Exit w/ 3.5" CF Tips - T304 | Race Version | S48023CF
Regular price $999.99Regular priceUnit price per$1,198.22Sale price $999.99Sale -
MBRP 15-21 Subaru WRX 2.0L/STI 2.5L 3in Dual Split Rear Exit w/ 3.5" Tips - T304 | Race Version | S4802304
Regular price $889.99Regular priceUnit price per$1,068.52Sale price $889.99Sale -
Perrin 15-21 Subaru WRX/STI Radiator Shroud | Without OEM Intake Scoop - Neon Yellow | PSP-ENG-512-2NY
Regular price $110.50Regular priceUnit price per$130.00Sale price $110.50Sale -
Tomei 02-14 WRX / 04-21 STI / 05-12 LGT / 04-13 FXT High Performance Valve Spring Set Turbo Models | TA304A-SB01A
Regular price $200.00Regular priceUnit price per$200.00Sale price $200.00
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.