Collection: Engine Upgrades For Subaru Impreza WRX STI GR Hatch
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Brian Crower +1mm Over STD Tip 37mm Intake Valve | 2002 - 2009 Subaru WRX (BC3604-S)
Vendor:Brian CrowerRegular price $197.00 USDRegular priceUnit price / per$197.00 USDSale price $197.00 USD -
Brian Crower +1mm Over STD Tip 33mm Exhaust Valve | 2002 - 2009 Subaru WRX (BC3605-S)
Vendor:Brian CrowerRegular price $197.00 USDRegular priceUnit price / per$197.00 USDSale price $197.00 USD -
Perrin Coolant Hose Adapter | 2002-2021 Subaru WRX / STI (ASM-GAU-107)
Vendor:Perrin PerformanceRegular price $26.25 USDRegular priceUnit price / per$35.00 USDSale price $26.25 USDSale -
Perrin Perf Nylon Coupler 2.4in Turbo Inlet | Subaru WRX/WRX STI (03-21) (X-PSP-INT-404)
Vendor:Perrin PerformanceRegular price $24.75 USDRegular priceUnit price / per$33.00 USDSale price $24.75 USDSale -
Perrin Oil Filter Cover | Subaru WRX / BRZ & Toyota GR86 with FA Engine (PSP-ENG-716)
Vendor:Perrin PerformanceRegular price From $85.50 USDRegular priceUnit price / per$114.00 USDSale price From $85.50 USDSale -
Torque Solution PNP Aluminum Bung Speed Density Kit | Subaru GD+GR (02-12) (TS-WH-497PA)
Vendor:Torque SolutionRegular price $82.34 USDRegular priceUnit price / per$99.99 USDSale price $82.34 USDSale -

Perrin Motor Mount Kit | 2002-2021 Subaru WRX / STI / 2005-2009 Subaru Legacy GT (PSP-DRV-055)
Vendor:Perrin PerformanceRegular price $276.75 USDRegular priceUnit price / per$369.00 USDSale price $276.75 USDSale -

Perrin Lightweight Crank Pulley Black | 2022+ Subaru BRZ/GR86 & WRX 2.4L Turbo (PSP-ENG-106BK)
Vendor:Perrin PerformanceRegular price $168.75 USDRegular priceUnit price / per$225.00 USDSale price $168.75 USDSale -

Perrin Lightweight Crank Pulley Blue | 2022+ Subaru BRZ/GR86 & WRX 2.0L Turbo (PSP-ENG-106BL)
Vendor:Perrin PerformanceRegular price $168.75 USDRegular priceUnit price / per$225.00 USDSale price $168.75 USDSale -

Perrin Lightweight Crank Pulley Red | 2022+ Subaru BRZ/GR86 & WRX 2.0L Turbo (PSP-ENG-106RD)
Vendor:Perrin PerformanceRegular price $168.75 USDRegular priceUnit price / per$225.00 USDSale price $168.75 USDSale -
Perrin Alternator Pulley - Black | 2022+ Subaru WRX and 2014-2018 Subaru Forester XT (PSP-ENG-121BK)
Vendor:Perrin PerformanceRegular price $45.75 USDRegular priceUnit price / per$61.00 USDSale price $45.75 USDSale -
Perrin Alternator Pulley - Red | 2022+ Subaru WRX and 2014-2018 Subaru Forester XT (PSP-ENG-121RD)
Vendor:Perrin PerformanceRegular price $45.75 USDRegular priceUnit price / per$61.00 USDSale price $45.75 USDSale -
Perrin Hardware For Subaru Pulley Cover | WRX/WRX STI (02-14/04-20) (S-PSP-ENG-150)
Vendor:Perrin PerformanceRegular price $30.00 USDRegular priceUnit price / per$40.00 USDSale price $30.00 USDSale -
Perrin Lightweight Water Pump Pulley | 2022+ Subaru WRX (PSP-ENG-112)
Vendor:Perrin PerformanceRegular price $92.25 USDRegular priceUnit price / per$123.00 USDSale price $92.25 USDSale -
Compressive Tuning Top Mount Intercooler Airshield 2008-2021 STI
Vendor:Compressive TuningRegular price $122.73 USDRegular priceUnit price / per$135.00 USDSale price $122.73 USDSale
Engine Upgrades for Subaru Impreza WRX STI GR Hatch to Boost Performance and Reliability
Unlock the full potential of your Subaru Impreza WRX STI GR Hatch with precision-engineered engine upgrades designed to enhance power, throttle response, and driving dynamics. This collection features components tailored specifically for your model, ensuring fitment confidence and meaningful performance improvements.
What are the key benefits of upgrading your WRX STI GR Hatch’s engine components?
Upgrading engine parts can significantly improve your vehicle’s responsiveness, power delivery, and durability. Performance intakes and exhausts optimize airflow for better combustion, while turbochargers and related hardware increase boost efficiency. Additionally, cooling system enhancements help maintain optimal temperatures under demanding conditions, reducing the risk of heat-related issues.
- Improved horsepower and torque output
- Enhanced throttle response and engine sound
- Increased reliability during spirited driving or track use
- Better thermal management for sustained performance
How to choose the right engine upgrades for your Subaru Impreza WRX STI GR Hatch?
Selecting the right parts depends on your performance goals and daily driving needs. Consider whether you want to focus on power gains, engine reliability, or sound refinement. Engine management and tuning accessories are essential for maximizing gains and ensuring safe operation. Also, drivetrain supports and mounts help maintain stability and reduce unwanted vibrations when increasing power.
Explore and shop quality engine upgrades for your WRX STI GR Hatch at WheelFlip
Our curated collection offers a wide range of aftermarket components engineered for perfect fitment and performance enhancement. From performance intakes and exhausts to turbochargers and cooling upgrades, each product is selected to help you build a reliable and powerful Subaru WRX STI GR Hatch. Browse WheelFlip’s engine upgrades to find parts that match your build goals with confidence.







