Blouch Turbo Dominator 4.0XTR Ball Bearing - Subaru WRX/STI/FXT/LGT

The Blouch Dominator 4.0XTR Ball Bearing Turbo is engineered for Subaru enthusiasts who demand extreme horsepower capability without compromising throttle response. Built for high-performance street, drag and time attack applications, the 4.0XTR brings massive airflow and top-end power while retaining OEM-style mounting for WRX, STI, Forester XT and Legacy GT turbo models.

Featuring a CNC-machined billet XTR compressor wheel paired with a premium ball bearing CHRA, this turbo delivers quicker spool than similarly sized journal-bearing units while supporting huge power levels. The lightweight turbine design provides exceptional efficiency in the upper RPM range, making the 4.0XTR a perfect solution for high-boost, high-horsepower Subaru builds running pump fuel or E85.

• Direct fit for Subaru WRX / STI / Forester XT / Legacy GT turbo models
• Billet XTR compressor wheel for maximum flow and durability
• Ball bearing core for faster spool and improved transient response
• Internal wastegate for stable boost control
• Ideal for high-horsepower street and competitive motorsport builds

Supporting upgrades recommended: professional ECU tune, high-flow intake, turbo-back exhaust, upgraded intercooler and strengthened fuel system. Performance varies with fuel type (91/98/E85) and vehicle setup.