Description
The Garrett G-XRace GXR55-91 Supercore is a high-performance turbocharger center section designed for extreme racing applications where maximum airflow and durability are critical. Built on Garrett’s advanced G-XRace architecture, this unit is engineered to support 1000 to 2500+ horsepower applications depending on configuration, engine setup, and tuning.
Featuring a 91mm compressor inducer paired with a 149mm turbine class design, the GXR55-91 delivers massive flow capacity while maintaining efficiency at high boost levels, making it ideal for professional drag racing and high-output performance builds.
High-Output XRace Engineering
The G-XRace platform is designed for racers pushing the limits of turbocharged performance. The GXR55-91 sits in the high-flow range of the 55-frame series, offering increased compressor flow and improved high-boost stability.
This makes it a strong choice for competitive motorsport environments where consistent power delivery is essential.
Performance Highlights:
- Supports approximately 1000–2500+ HP
- 91mm high-flow compressor inducer
- 149mm turbine class architecture
- XBoost aerodynamic compressor technology
- Designed for extreme boost and high RPM operation
XBoost Compressor Technology
Garrett’s XBoost technology enhances compressor efficiency by improving airflow and pressure capability at high operating ranges. This results in lower intake temperatures and more stable boost performance under load.
The design is optimized to maintain efficiency even when operating at extreme airflow demand.
91 / 149mm Supercore Construction
The GXR55-91 supercore features a precision-balanced rotating assembly engineered for high-speed stability and motorsport-grade durability. It is built to handle extreme shaft speeds, heat, and sustained racing conditions.
Construction Features:
- Precision-balanced CHRA assembly
- High-strength billet-grade internal components
- Motorsport-level machining tolerances
- Lightweight, high-durability rotating assembly
- Designed for high RPM and high boost stability
Motorsport-Grade Durability
Built specifically for racing environments, the GXR55-91 is designed to withstand continuous high-load operation. It is commonly used in drag racing and high-performance turbo applications where reliability under extreme conditions is essential.
Its construction ensures consistent performance even under repeated high-boost runs.
Key Features
- Garrett G-XRace GXR55-91 Supercore
- 91mm compressor inducer / 149mm turbine class
- Supports 1000–2500+ HP applications
- XBoost high-efficiency compressor technology
- Lightweight billet construction for durability
- Designed for drag racing and motorsport use only
- High-flow architecture for extreme performance builds
- Optimized for high boost pressure systems
Applications
- Drag racing (radial, unlimited, and X275-style builds)
- High-horsepower turbocharged engines
- Motorsport competition vehicles
- Large displacement performance engines (3.0L–12.0L range)
- Extreme boost racing applications
Why Choose the Garrett G-XRace GXR55-91?
The GXR55-91 is designed for builders who need serious airflow capacity and proven motorsport reliability. It delivers a balance of high horsepower potential and stable high-boost operation, making it suitable for competitive racing environments where consistency and power matter most.
This is a true competition-level supercore built for extreme performance applications—not a street-focused upgrade.
