Blouch Performance Turbo 1.5G2-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI

Blouch Performance Turbo 1.5G2-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI | 520HP Capability | High-Flow Ball Bearing Turbocharger

Overview

The Blouch Performance Turbo 1.5G2-R is a high-performance ball bearing turbocharger designed specifically for Subaru WRX models from 2002 to 2007 and WRX STI models from 2004 to 2021. Engineered to support up to 520 horsepower, this turbocharger is ideal for enthusiasts seeking significant power gains while maintaining reliable spool characteristics. Whether you are building a street car or a track-focused machine, the 1.5G2-R offers a robust upgrade path for your Subaru’s forced induction system.

Blouch’s design philosophy centers on maximizing efficiency and responsiveness through advanced materials and precision engineering. The 1.5G2-R features a custom low-friction, low-inertia ceramic ball bearing CHRA, which reduces rotational mass and improves spool time compared to traditional journal bearing turbos. The custom high-flow 56.5mm turbine wheel and the Blouch 71mm G2 compressor wheel are optimized for airflow and durability, ensuring consistent performance under demanding conditions. Available with either an 8cm or 10cm exhaust housing, this turbocharger can be tailored to your specific power goals and driving style.

For Subaru owners, this turbocharger represents a significant step up in power potential without sacrificing the characteristic Subaru turbo response. The combination of ball bearing technology and carefully selected compressor and turbine sizes delivers quicker boost response and higher airflow capacity, which translates to improved throttle response and sustained power at higher RPMs. Proper tuning is recommended to fully realize the benefits and maintain engine reliability.

Features & Specifications

This Blouch Performance Turbo 1.5G2-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 with high-quality materials, it delivers up to 520 horsepower capability for Subaru enthusiasts seeking substantial power upgrades with reliable spool characteristics.

• Brand: Blouch Performance Turbo
• Product: 1.5G2-R Ball Bearing Turbocharger
• Part Number: N/A
• Fitment: 2002-2007 Subaru WRX / 2004-2021 Subaru WRX STI
• Material: Ceramic ball bearing CHRA, high-flow turbine and compressor wheels
• Finish: Standard turbine housing finish
• Construction: Custom low-inertia ceramic ball bearing CHRA, precision balanced
• Origin: Not specified
• Power Gains: Supports up to 520 HP
• Tuning Required: Recommended
• Compressor Wheel: 71mm Blouch G2
• Turbine Wheel: 56.5mm custom high-flow
• Exhaust Housing Options: 8cm or 10cm

Key Benefits

• Performance: Supports up to 520 horsepower for serious power upgrades on WRX and STI platforms
• Spool Response: Ceramic ball bearing CHRA reduces friction and inertia for quicker boost response
• Durability: High-quality materials and construction ensure reliable operation under high boost conditions
• Fitment: Direct fit for 2002-2007 WRX and 2004-2021 STI models, maintaining OEM mounting points
• Adjustability: Choice of 8cm or 10cm exhaust housing allows tuning for spool and top-end power balance
• Quality: Precision balanced components reduce vibration and increase turbo longevity

What's Included

• 1× Blouch Performance Turbo 1.5G2-R Ball Bearing Turbocharger
• Choice of 8cm or 10cm exhaust housing (as selected)
• Installation instructions (if provided by manufacturer)

Installation & Compatibility

Installation of the Blouch 1.5G2-R turbocharger requires moderate mechanical skill and familiarity with Subaru turbo systems. Professional installation is recommended to ensure proper fitment and to avoid potential issues with oil and coolant lines. Specialized tools for turbo removal and installation may be necessary. Because this turbo supports up to 520 horsepower, a custom tune is strongly recommended to optimize performance and maintain engine safety. Verify compatibility with your specific year and trim level before purchase, especially if your vehicle has aftermarket modifications.

• Professional Installation: Recommended
• Modifications Required: Tuning required; possible supporting modifications depending on power goals
• Verify Compatibility: Confirm fitment for your specific year and trim level

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