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HKS Stainless Steel Equal Length Exhaust Manifold 2006-2014 WRX / 2004-2021 STI
$1,101.99
hks14019-AF002
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
This tubular turbo exhaust manifold is engineered to maximize exhaust flow, improving turbo spool-up and providing exceptional flow capacity. Constructed from durable SUH409 stainless...
HKS Super SQV4 Blow Off Valve w/ Suction Return Kit 2008-2021 STI
$660.99
hks71008-AF013V
11-14 WRX/STI
15-21 WRX/STI
The HKS Super SQV (Sequential Blow Off Valve) features a unique sequential valve structure paired with a differential pressure control system, allowing it to...
ACT Heavy Duty Race Sprung 4 Pad Clutch 2004-2021 STI / 2007-2009 Legacy GT Spec B
$1,490.66
$1,207.99
actSB10-HDG4
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The SB10-HDG4 kit combines ACT’s Heavy Duty pressure plate with a 4-pad spring-centered race disc for high-performance applications. The diaphragm-style pressure plate increases clamp...
ACT Mod Twin 225 Heavy Duty Rigid Race Twin Disk Clutch Kit 2004-2021 STI
$3,689.42
$2,988.99
actT1R-S07
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
T1R-S07 Mod-Twin 225 HD Rigid Race Kit tackles aggressive launches and rapid shifting of high powered AWD’s by combining twice the ceramic friction surfaces...
ACT Mod-Twin 225 Heavy Duty Sprung Race Twin Disc Clutch Kit 2004-2021 STI
$4,342.40
$3,071.99
actT1R-S05
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The Mod-Twin 225 HD Sprung Race Kit is engineered for high-powered AWD vehicles, providing aggressive launches with smoother shifting. This modular twin-disc design combines...
ACT Mod-Twin 225 Extreme Duty Sprung Race Twin Disk Clutch Kit 2004-2021 STI
$4,342.40
$3,058.99
actT2R-S05
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The Mod-Twin 225 XT Sprung Race Kit is designed for high-powered AWD vehicles, delivering aggressive launches and smoother shifting. It combines twice the ceramic...
ACT Mod-Twin 225 Extreme Rigid Street Twin Disk Clutch Kit 2004-2021 STI
$4,016.72
$2,854.99
actT2S-S07
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The Mod-Twin 225 XT Rigid Street Kit is engineered for high-powered AWD street vehicles, blending smooth, positive engagement with rapid shifting. It combines twice...
ACT Mod-Twin 225 Extreme Rigid Race Twin Disk Clutch Kit 2004-2021 STI
$3,689.42
$2,988.99
actT2R-S07
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The Mod-Twin 225 XT Rigid Race Kit is designed for high-powered AWD racing vehicles, providing extreme torque capacity and ultra-fast shifts. It combines twice...
ACT Mod-Twin 225 Heavy Duty Rigid Street Twin Disc Clutch Kit 2004-2021 STI
$4,016.72
$2,816.99
actT1S-S07
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The Mod-Twin 225 HD Rigid Street Kit is designed for high-powered AWD vehicles, blending easy pedal feel with smooth yet positive engagement and...
ACT Extreme Race Sprung 6 Pad Clutch 2004-2021 STI / 2007-2009 Legacy GT Spec B
$1,930.16
$1,318.99
actSB10-XTG6
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The SB10-XTG6 ACT Extreme Race Sprung 6 Pad Clutch Kit is designed for high-power drivers demanding aggressive engagement and long-lasting durability. It features an...
ACT Mod-Twin 225 Extreme Duty Sprung Street Twin Disk Clutch Kit 2004-2021 STI
$3,271.86
$2,928.99
actT2S-S05
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The Mod-Twin 225 XT Sprung Street Kit is engineered for high-powered AWD street cars, delivering a perfect balance of pedal feel, engagement quality, and...
ACT Mod Twin 225 Heavy Duty Sprung Street Twin Disc Clutch Kit 2004-2021 STI
$3,271.86
$2,896.99
actT1S-S05
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The Mod-Twin 225 HD Sprung Street Kit is engineered for high-powered AWD street cars, delivering uncompromised pedal feel, durability, and engagement quality with very...
ACT Heavy Duty Sprung 6-Puck Disc Clutch 2004-2021 STI / 2007-2009 Legacy GT Spec B
$1,439.56
$1,257.99
actSB10-HDG6
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The ACT SB10-HDG6 kit features ACT’s most popular Heavy Duty pressure plate, designed to deliver increased clamp load, reduced deflection, and maximum clutch life....
ACT XACT Prolite Flywheel 2004-2021 STI
$1,069.04
$743.99
act600240
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The ACT XACT Prolite Flywheel is a lightweight, low-inertia flywheel engineered for high-performance applications. Crafted from chromoly steel, it’s designed to deliver the fastest...
ACT Clutch Release Bearing 2004-2021 STI
$189.52
$140.99
actRB601
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
Upgrade your Subaru WRX STI’s clutch system with the ACT Clutch Release Bearing, designed for model years 2004 to 2021. This premium release bearing...
ACT Extreme Performance Street Sprung Clutch 2004-2021 STI / 2007-2009 Legacy GT Spec B
$1,854.72
$1,277.99
actSB10-XTSS
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The SB10-XTSS ACT Extreme Performance Street Sprung Clutch Kit is designed for high-powered street cars seeking smooth, reliable engagement with enhanced durability. It features...
ACT Streetlite Steel Flywheel 2004-2021 STI
$995.44
$694.99
act600235
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
ACT Streetlite Steel Flywheel 2004-2021 STI | Performance Enhancement | Drivetrain Upgrade Overview The ACT Streetlite Steel Flywheel is a high-quality upgrade designed specifically...
ACT Heavy Duty Performance Street Disc Clutch 2004-2021 STI / 2007-2009 Legacy GT Spec B
$1,738.80
$1,216.99
actSB10-HDSS
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
The SB10-HDSS kit pairs ACT’s Heavy Duty pressure plate with their Performance Street disc for reliable street and light race performance. The diaphragm-style pressure...
COBB NexGen Stage 2 Power Package w/ Blue Intake 2015-2018 STI
$4,946.99
cobbSUB004NG2S1-BL
15-21 WRX/STI
The Subaru NexGen Stage 2 Power Package for STI Includes: Subaru Accessport V3 (AP3-SUB-004), Subaru SF Intake System (Blue), Subaru Airbox, Subaru Silicone Turbo...
COBB NexGen Stage 1 to Stage 2 + Flex Fuel Power Package Upgrade w/ Black Intake 2015-2018 STI
$5,443.99
cobbSUB004NG2S1FF-S1-UP-BK
15-21 WRX/STI
DESCRIPTIONThe Subaru Stage 1 to NexGen Stage 2+ Flex Fuel Power Package for STI Includes: SF Intake + Airbox, Silicone Turbo Inlet V2, Throttle...
COBB NexGen Stage 1 to Stage 2 + Flex Fuel Power Package Upgrade w/ Blue Intake 2015-2018 STI
$5,443.99
cobbSUB004NG2S1FF-S1-UP-BL
15-21 WRX/STI
DESCRIPTIONThe Subaru Stage 1 to NexGen Stage 2+ Flex Fuel Power Package for STI Includes: SF Intake + Airbox, Silicone Turbo Inlet V2, Throttle...
COBB NexGen Stage 2 + Flex Fuel Power Package w/ Blue Intake 2015-2018 STI
$6,357.99
cobbSUB004NG2S1FF-BL
15-21 WRX/STI
DESCRIPTIONThe Subaru NexGen Stage 2+ Flex Fuel Power Package for STI Includes: Subaru Accessport V3 (AP3-SUB-004), SF Intake & Airbox, Silicone Turbo Inlet V2,...
COBB NexGen Stage 2 + Flex Fuel Power Package w/ Black Intake 2015-2018 STI
$6,357.99
cobbSUB004NG2S1FF-BK
15-21 WRX/STI
DESCRIPTIONThe Subaru NexGen Stage 2+ Flex Fuel Power Package for STI Includes: Subaru Accessport V3 (AP3-SUB-004), SF Intake & Airbox, Silicone Turbo Inlet V2,...
COBB Front Mount Intercooler Hot Side Piping 2015-2021 STI
$684.00
$683.99
cobb716500-H
15-21 WRX/STI
The COBB Tuning Front Mount Intercooler Hot Pipes are available to connect the turbocharger compressor to the passenger side of the COBB Tuning FMIC...
COBB NexGen Stage 2 + Flex Fuel Power Package w/ Redline Carbon Fiber Intake 2015-2021 STI
$6,717.99
cobbSUB004NG2S2FF-RED
15-21 WRX/STI
This complete bolt-on performance kit delivers Stage 2‑level power with seamless ethanol flexibility for the STI Platform. Centered around the factory-favorite Accessport V3 for...
COBB Front Mount Intercooler Cold Side Piping 2015-2021 STI
$684.00
$683.99
cobb716500-C
15-21 WRX/STI
The COBB Tuning Front Mount Intercooler Cold Side Pipes are available for separate purchase for those of you who may have purchased one of...
COBB NexGen Stage 1 to Stage 2 + Flex Fuel Power Package Upgrade w/ Redline Carbon Fiber Intake 2015-2021 STI
$5,796.00
$5,795.99
cobbSUB004NG2S2FF-RED-S1-UP
15-21 WRX/STI
DESCRIPTIONThe Subaru Stage 1 to NexGen Stage 2+ Flex Fuel Power Package for STI Includes: Redline Carbon Fiber Intake, Silicone Turbo Inlet V2, Throttle...
COBB Fuel Pressure Regulator Manifold Relocation Kit 2008-2021 STI
$36.00
$35.99
cobb315150
11-14 WRX/STI
15-21 WRX/STI
The COBB Tuning Fuel Pressure Regulator Manifold Reference Relocation Kit includes everything you need to relocate the FPR reference line to a more stable...
COBB Stage 1+ Power Package w/ Blue Intake 2015-2018 STI
$1,821.99
cobb616X01P-BL
15-21 WRX/STI
Want the world's best selling, most flexible ECU upgrade solution along with COBB's SF Intake System to increase air flow? Start here, down the...
COBB NexGen Stage 2 Power Package w/ Redline Carbon Fiber Intake 2015-2021 STI
$5,299.99
cobbSUB004NG2S2-RED
15-21 WRX/STI
The Subaru NexGen Stage 2 Power Package for STI Includes: Subaru Accessport V3 (AP3-SUB-004), Redline Carbon Fiber Intake, Subaru Airbox, Subaru Silicone Turbo...
COBB Front Sway Bar 26mm Adjustable 2015-2021 STI
$540.00
$539.99
cobbCB-099FZ-26
15-21 WRX/STI
The COBB 2-way Adjustable Front Anti-Sway Bar for the Subaru is the easiest way to improve handling balance, reduce body roll, and shed chassis...
COBB NexGen Stage 2 Power Package w/ Black Intake 2015-2018 STI
$4,946.99
cobbSUB004NG2S1-BK
15-21 WRX/STI
The Subaru NexGen Stage 2 Power Package for STI Includes: Subaru Accessport V3 (AP3-SUB-004), Subaru SF Intake System (Black), Subaru Airbox, Subaru Silicone...
Cobb High Flow Fuel Pump 2008-2014 WRX / 2008-2021 STI / 2005-2009 Legacy GT
$273.99
cobb315450
11-14 WRX/STI
15-21 WRX/STI
AEM’s 340lph E85-Compatible High Flow In-Tank Fuel Pump is built to deliver reliable performance under demanding conditions. Designed with robust internal components, it withstands...
COBB Front Mount Intercooler Kit Silver 2015-2021 STI
$3,506.99
cobbSUBFMIC001SL
15-21 WRX/STI
Remove the overworked factory intercooler from your 2015+ STI in favor of the Black COBB Front Mount Intercooler Kit. Featuring a massive 24" x...
COBB Shifter Bushings 6 Speed 2004-2021 STI / 2007-2009 Legacy GT Spec B
$86.99
cobb213320
02-07 WRX/STI
11-14 WRX/STI
15-21 WRX/STI
This shifter bushing upgrade is a perfect addition to a short shifter upgrade. Short shifters reduce shifter throw and can lower shift knob height,...
COBB SF Blue Intake and Airbox Package 2015-2018 STI
$777.99
cobb715315-BL
15-21 WRX/STI
Setting the standard for MAF style intakes with a velocity stack, airflow straighteners and composite body for ultimate performance. Feed your SF Intake cold...