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Save 4%
$257.00
$246.00
SKU: CBE-WRXALT08
Save 22%
$462.00
$361.00
SKU: MIMMMRT-STI-08
$1,248.00
IAG Performance Unequal Length Header & Up Pipe for 2002-2014 WRX and 2004-21 WRX STI | IAG-EXT-1000
SKU: IAGIAG-EXT-1000
$1,049.00
SKU: IAGIAG-ENG-2201SL
$907.00
Fitment: 08-14 WRX / 08-21 STI / 05-09 LGT / 05-09 Outback XT / 09-13 FXT
SKU: cobb822615
$666.00
SKU: rad20-0984
Save 5%
$899.00
$854.00
SKU: rad20-0782-00
Save 26%
$382.00
$283.00
SKU: PLM-SUB-UP-PIPE-IWG
$97.00
Fitment: 08-21 STI
SKU: grm112000.1
$1,521.00
SKU: FIC IS175-2150H
Save 11%
$19.00
$17.00
SKU: TOMPB6150-FGK06
Save 3%
$200.00
$195.00
SKU: seiHOODPROP-S
$343.00
SKU: TIA485-2
Save 30%
$2,949.00
$2,064.00
Fitment: 11-14 WRX Hatch / 08-14 STI Hatch
SKU: invHS08ST5GM4SS
Save 20%
$65.00
$52.00
SKU: perPSP-ITR-301BK
Save 22%
$933.00
$724.00
SKU: MMRAD-STI-08X
$248.00
SKU: klb070-110
$3,310.00
SKU: klbHH-2BOLT-SWAIN
Save 10%
$248.00
$223.00
SKU: aem50-1200
Optimize your Subaru STI 2008-2014 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.