Blouch Performance Turbo 18G-XT-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI

Blouch Performance Turbo 18G-XT-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI | 430HP Capability | High-Flow Ball Bearing Turbocharger

Overview

The Blouch Performance Turbo 18G-XT-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 430 horsepower, this turbocharger is ideal for enthusiasts seeking a significant power upgrade while maintaining reliable spool characteristics and durability. It caters to those who demand both street-friendly response and track-capable performance from their forced induction setup.

Blouch’s design philosophy centers on maximizing efficiency and minimizing rotational inertia. The 18G-XT-R features a custom low-friction, low-inertia ceramic ball bearing CHRA that reduces turbo lag and improves throttle response. The combination of a 56.5mm turbine wheel and a 68mm XT compressor wheel is optimized for high flow and quick spool, delivering a broad powerband. The availability of 8cm or 10cm exhaust housings allows for tailored fitment and tuning flexibility, ensuring compatibility with various exhaust setups and performance goals.

For Subaru owners, this turbocharger offers a balanced upgrade that enhances boost response and power potential without sacrificing reliability. The included water pipes, oil feed line, and ported exhaust housing simplify installation and support long-term durability. Whether upgrading a daily driver or building a dedicated performance machine, the 18G-XT-R provides a proven platform to unlock the full potential of your EJ or FA engine with precise tuning.

Features & Specifications

This Blouch Performance Turbo 18G-XT-R turbocharger is engineered for Subaru WRX and STI platforms and features a custom ceramic ball bearing CHRA with a 68mm compressor wheel. Constructed from high-quality materials, it delivers efficient boost response and high flow capacity for Subaru enthusiasts seeking up to 430 horsepower.

• Brand: Blouch Performance Turbo
• Product: 18G-XT-R Ball Bearing Turbocharger
• Part Number: N/A
• Fitment: 2002-2007 Subaru WRX / 2004-2021 Subaru WRX STI
• Material: High-grade turbine and compressor alloys
• Finish: Natural metal finish
• Construction: Custom ceramic ball bearing CHRA, ported exhaust housing
• Origin: Made in USA
• Power Gains: Up to 430 HP
• Tuning Required: Yes, professional tuning recommended
• Compressor Wheel Size: 68mm XT
• Turbine Wheel Size: 56.5mm low inertia
• Exhaust Housing Options: 8cm or 10cm ported
• Included Components: Water pipes, oil feed line, turbine inlet and outlet gaskets, ported exhaust housing

Key Benefits

• Performance: Supports up to 430 horsepower with quick spool and high flow efficiency
• Durability: Ceramic ball bearing CHRA reduces friction and extends turbo life
• Fitment: Direct fit for 2002-2007 WRX and 2004-2021 STI models with included hardware
• Adjustability: Choice of 8cm or 10cm exhaust housings for tailored boost response and power delivery
• Quality: Precision engineering and USA manufacturing ensure consistent performance and reliability
• Value: Complete kit includes necessary water and oil lines plus gaskets for streamlined installation

What's Included

• 1× Blouch Performance Turbo 18G-XT-R Ball Bearing Turbocharger
• Water pipes
• Oil feed line
• Turbine inlet and outlet gaskets
• Ported exhaust housing (8cm or 10cm)
• Installation instructions

Installation & Compatibility

Installation of the Blouch 18G-XT-R turbocharger is moderately complex and recommended for experienced enthusiasts or professional shops familiar with Subaru turbo systems. The kit includes all necessary water and oil feed components and gaskets for a direct fit on specified WRX and STI models. Proper tuning is essential to safely realize the power gains and maintain engine reliability. No major modifications are required, but verifying compatibility with your specific year and trim is important to ensure proper fitment and performance.

• Professional Installation: Recommended
• Modifications Required: None, tuning required
• Verify Compatibility: Confirm fitment for your specific year and trim level

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