Collection: Engine Upgrades For Subaru Impreza G2
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Manley 2.5L EJ257 Piston | Subaru WRX STI (99.75mm Bore) (621002C-1)
Vendor:Manley PerformanceRegular price $174.81 USDRegular priceUnit price / per$190.01 USDSale price $174.81 USDSale -
Manley 83mm Stroker Piston Set with Rings | Subaru WRX STi (04+) (622100C-4)
Vendor:Manley PerformanceRegular price $679.55 USDRegular priceUnit price / per$760.03 USDSale price $679.55 USDSale -

Manley 04+ Subaru WRX STI EJ257 STD Stroke 99.5mm STD Bore 8.5:1 Dish Piston | Subaru WRX STI
Vendor:Manley PerformanceRegular price $169.89 USDRegular priceUnit price / per$190.01 USDSale price $169.89 USDSale -
Manley 83mm Stroker Piston Set | Subaru WRX STi (04+) (622002C-4)
Vendor:Manley PerformanceRegular price $679.55 USDRegular priceUnit price / per$760.03 USDSale price $679.55 USDSale -
Manley Extreme Duty Stainless Valves | Subaru WRX (EJ20) / 2004 STi (11139-8)
Vendor:Manley PerformanceRegular price $506.87 USDRegular priceUnit price / per$652.79 USDSale price $506.87 USDSale -
Manley 75mm DE-Stroked Piston Set | Subaru WRX STI (EJ257) (621105C-4)
Vendor:Manley PerformanceRegular price $679.55 USDRegular priceUnit price / per$760.03 USDSale price $679.55 USDSale -
Manley 99.75mm STD Stroke +.25mm Bore Dish Piston Set | Subaru WRX STi (04+) (612102C-4)
Vendor:Manley PerformanceRegular price $679.55 USDRegular priceUnit price / per$760.03 USDSale price $679.55 USDSale -
Manley Race Master Exhaust Valve | Subaru WRX EJ205 / EJ257 (Single) (11171-1)
Vendor:Manley PerformanceRegular price $24.40 USDRegular priceUnit price / per$31.42 USDSale price $24.40 USDSale -
Manley Performance 75mm DE-STROKED Piston Set | Subaru WRX STi (04+) (SKU: 621100C-4)
Vendor:Manley PerformanceRegular price $679.55 USDRegular priceUnit price / per$760.03 USDSale price $679.55 USDSale -
Aeromotive 340lph Dual Drop-In Stealth Fuel System | Subaru WRX/STi (08-20) (AF18082)
Vendor:AeromotiveRegular price $876.22 USDRegular priceUnit price / per$993.05 USDSale price $876.22 USDSale -
Aeromotive Top Feed Fuel Rails | Subaru WRX / STI (89-14) (14169)
Vendor:AeromotiveRegular price $256.01 USDRegular priceUnit price / per$290.15 USDSale price $256.01 USDSale -
Manley STD Stroke 99.5mm Bore Dish Piston Set with Rings | Subaru WRX STi (04+) (612000C-4)
Vendor:Manley PerformanceRegular price $679.55 USDRegular priceUnit price / per$760.03 USDSale price $679.55 USDSale -
Manley 36mm Stainless Race Flo Valve | Subaru WRX (00-03) / STI (04) (11138-1)
Vendor:Manley PerformanceRegular price $24.40 USDRegular priceUnit price / per$31.42 USDSale price $24.40 USDSale -
Turbosmart Kompact Dual Port Blow-Off Valve | Subaru WRX (08-14) / Legacy GT (03-08)
Vendor:TurbosmartRegular price $217.93 USDRegular priceUnit price / per$284.99 USDSale price $217.93 USDSale -
Manley Performance 37mm Stainless Race Flo Valve | Subaru WRX (00-03) / STi (04) (11140-1)
Vendor:Manley PerformanceRegular price $24.40 USDRegular priceUnit price / per$31.42 USDSale price $24.40 USDSale -
Manley Extreme Duty Valve | Subaru WRX (EJ20) / STI (00-03) (11139-1)
Vendor:Manley PerformanceRegular price $63.36 USDRegular priceUnit price / per$81.60 USDSale price $63.36 USDSale -
Manley 04+ Subaru WRX STI EJ257 STD Stroke 99.75mm +.25mm Bore 9.8:1 Dish Piston | Subaru WRX STI (04+)
Vendor:Manley PerformanceRegular price $169.89 USDRegular priceUnit price / per$190.01 USDSale price $169.89 USDSale -
DeatschWerks 255 LPH In-Tank Fuel Pump Set Up Kit | Subaru WRX (02-07) / Impreza (93-07) / Legacy (90-07) (9-201-0791)
Vendor:DeatschWerksRegular price $87.20 USDRegular priceUnit price / per$109.00 USDSale price $87.20 USDSale -
Aeromotive 340lph Drop-In Stealth Fuel System | Subaru WRX / STI (18080)
Vendor:AeromotiveRegular price $718.51 USDRegular priceUnit price / per$814.30 USDSale price $718.51 USDSale -
King Engine Bearings Subaru WRX/STi EJ20/EJ22/EJ25 48mm Performance Rod Bearing Set | Subaru WRX/STi (CR4280XP0.5)
Vendor:King Engine BearingsRegular price $43.33 USDRegular priceUnit price / per$73.65 USDSale price $43.33 USDSale
Engine Upgrades for Subaru Impreza G2: Boost Power and Reliability
Unlock the full potential of your Subaru Impreza G2 with targeted engine upgrades designed to enhance power, throttle response, and overall driving dynamics. This collection offers a range of quality aftermarket parts engineered specifically for your model’s unique requirements, ensuring reliable performance gains and seamless fitment.
What are the key benefits of upgrading your Subaru Impreza G2 engine components?
Upgrading engine components can significantly improve your vehicle’s responsiveness, power delivery, and durability. Enhanced intake and exhaust systems increase airflow efficiency, while cooling and management parts help maintain optimal operating temperatures under demanding conditions. Durable mounts and hardware reduce engine movement, improving reliability and driving feel.
- Improved horsepower and torque through better airflow
- Enhanced throttle response for quicker acceleration
- Increased engine reliability with upgraded mounts and cooling
- More aggressive exhaust sound without sacrificing fitment
How to choose the right engine upgrades for your Subaru Impreza G2 build?
Selecting the right parts depends on your performance goals and daily driving needs. For power gains, focus on high-performance intake and exhaust components that optimize airflow. If reliability is a priority, consider upgraded engine mounts and cooling solutions to reduce stress on factory parts. Always ensure compatibility with your Impreza G2’s engine specifications to maintain fitment confidence and avoid installation issues.
Explore quality engine upgrades for your Subaru Impreza G2 at WheelFlip
Our curated collection features premium intake, exhaust, cooling, and mounting components designed to integrate seamlessly with your Subaru Impreza G2. Whether you’re upgrading for street performance or track use, find the right parts to enhance your engine’s power and response. Shop with confidence at WheelFlip and take your Impreza’s performance to the next level.















