Blouch Performance Turbo 2.5G2-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI | 550HP Capability | High-Flow Ball Bearing Turbocharger
Overview
The Blouch Performance Turbo 2.5G2-R is a high-performance ball bearing turbocharger designed specifically for Subaru WRX and WRX STI models spanning 2002-2007 for the WRX and 2004-2021 for the STI. Engineered to support up to 550 horsepower, this turbocharger is ideal for enthusiasts seeking significant power gains while maintaining reliable spool characteristics and durability. Whether you are upgrading your stock turbo for track use or building a high-output street machine, the 2.5G2-R offers a robust solution tailored to Subaru’s EJ and FA engine platforms.
Blouch’s design philosophy centers on maximizing efficiency and responsiveness through advanced materials and precision engineering. The 2.5G2-R features a custom low-friction, low-inertia ceramic ball bearing center housing rotating assembly (CHRA), which reduces rotational mass and friction for quicker spool and improved throttle response. The turbo also incorporates a custom high-flow, low-inertia 60mm turbine wheel paired with a Blouch 71mm G2 compressor wheel capable of delivering 55 pounds per minute of airflow. This combination ensures strong mid-range torque and high-end power potential, making it a versatile upgrade for a wide range of Subaru builds.
For Subaru owners, this turbocharger translates into a significant performance transformation. The availability of 8cm or 10cm exhaust housings allows for tuning flexibility depending on your power goals and exhaust setup. The ball bearing design enhances durability and reduces turbo lag, providing a more engaging driving experience. When paired with proper supporting modifications and tuning, the Blouch 2.5G2-R unlocks the full potential of your WRX or STI, delivering consistent power delivery and improved throttle response across the rev range.
Features & Specifications
This Blouch Performance Turbo 2.5G2-R turbocharger is engineered for Subaru WRX and WRX STI platforms and features a custom ceramic ball bearing CHRA for reduced friction and faster spool. Constructed from high-quality materials, it delivers up to 550 horsepower capability for Subaru enthusiasts seeking substantial power upgrades with reliable performance.
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Brand: Blouch Performance Turbo
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Product: Blouch Performance Turbo 2.5G2-R Ball Bearing Turbocharger
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Part Number: N/A
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Fitment: 2002-2007 Subaru WRX / 2004-2021 Subaru WRX STI
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Material: Ceramic ball bearing CHRA, high-flow turbine and compressor wheels
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Finish: Raw metal with precision machining
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Construction: Custom low-inertia ceramic ball bearing CHRA, welded turbine housing
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Origin: Not specified
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Power Gains: Up to 550 HP
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Tuning Required: Yes, recommended for optimal performance and reliability
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Compressor Wheel Size: 71mm Blouch G2
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Turbine Wheel Size: 60mm custom low-inertia
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Exhaust Housing Options: 8cm or 10cm available
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Airflow Capacity: 55 lbs/min
Key Benefits
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Performance: Supports up to 550 horsepower, enabling substantial power upgrades for WRX and STI builds
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Spool Response: Low-inertia ceramic ball bearing CHRA reduces friction for quicker spool and improved throttle response
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Durability: High-quality materials and construction ensure long-lasting reliability under high boost conditions
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Fitment: Direct fit for 2002-2007 WRX and 2004-2021 STI models, maintaining OEM mounting points for straightforward installation
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Adjustability: Choice of 8cm or 10cm exhaust housings allows tuning flexibility to match power goals and exhaust setups
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Efficiency: Custom high-flow turbine and compressor wheels maximize airflow and minimize lag for a balanced power curve
What's Included
- 1× Blouch Performance Turbo 2.5G2-R Ball Bearing Turbocharger
- Choice of 8cm or 10cm exhaust housing (depending on selected option)
- Installation instructions (if provided by manufacturer)
Installation & Compatibility
Installation of the Blouch 2.5G2-R turbocharger requires moderate to advanced mechanical skills and is best performed by a professional or experienced enthusiast. Proper tuning is essential to ensure safe and reliable operation at higher power levels. Special tools may be needed for turbo removal and installation, including torque wrenches and possibly custom exhaust components depending on your setup. This turbo is compatible with 2002-2007 Subaru WRX and 2004-2021 Subaru WRX STI models; verify your specific year and trim for fitment. Supporting modifications such as upgraded fuel systems, intercoolers, and engine management are recommended to fully realize the turbo’s potential.
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Professional Installation: Recommended
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Modifications Required: Tuning required; supporting mods recommended
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Verify Compatibility: Confirm fitment for your specific year and trim level
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