Garrett 952766-5001S G-XRace GXR45-76 76mm Supercore Turbocharger Racing 1650HP

Vehicle Fitment

• Universal Fit - Not application-specific. Compatible with any engine platform where a GXR45-frame turbocharger can be fitted. Turbine housing sold separately.

Fitment Notes

• This is a Supercore only - a complete turbine and compressor assembly without a turbine housing. A GXR45-compatible turbine housing must be purchased separately to complete the turbocharger unit.
• The GXR45 Supercore uses the same twin-scroll T4 divided and V-Band turbine housings as the Garrett G-Series G45, enabling a direct drop-in upgrade for existing G45 builds.
• Turbine housing A/R options: 1.01, 1.15, 1.28, and 1.44 - available in stainless steel with T4 divided or V-Band turbine inlet flanges.
• Designed for racing use only. Not legal for use on public roads. Not CARB compliant.
• Compatible with Garrett speed sensors PN 781328-0003 and 781328-0004, and the G-Smart Bluetooth Module PN 923586-0003 (sold separately).
• Maximum allowable turbocharger speed: 100,000 RPM. Operation above this limit is at the owner's risk.

Features

• Patent-pending XBoost Technology delivers up to +29% increase in compressor flow compared to the G-Series line (depending on model and frame size)
• Increased pressure ratio capability allows operation at significantly higher boost levels versus G-Series predecessors
• Improved compressor efficiency at high flow rates produces cooler, denser intake charge for greater power density
• Lightweight aluminum backplate reduces overall turbocharger weight compared to traditional cast designs
• Flanged speed sensor port simplifies installation and allows direct monitoring of turbine shaft speed
• Interchangeable with existing G45 G-Series turbine housings - enables direct supercore swap without manifold or housing changes
• Inconel turbine wheel construction for extreme heat and fatigue resistance under sustained high-power operation
• Dual ceramic ball bearing center section for reduced friction, faster spool response, and extended service life
• Water fittings included with supercore for water-cooled center housing configurations
• Compatible with Garrett G-Smart Bluetooth Module for real-time turbo speed monitoring and boost data logging

Specifications

• Part Number: 952766-5001S
• Product Line: G-XRace GXR45-76
• Frame Size: GXR45
• Max Supported Power: 1,650 HP
• Compressor Wheel Inducer: 76.7mm
• Compressor Wheel Exducer: 109mm
• Turbine Wheel Inducer: 89mm
• Turbine Wheel Exducer: 82mm
• Max Turbo Speed: 100,000 RPM
• Turbine Housing Compatibility: GXR45 T4 Divided or V-Band (sold separately) - A/R options: 1.01, 1.15, 1.28, 1.44
• Bearing Type: Dual Ceramic Ball Bearing
• Turbine Wheel Material: Inconel
• Backplate Material: Lightweight Aluminum
• Sensor Compatibility: Garrett 781328-0003 / 781328-0004 speed sensors; G-Smart Bluetooth Module PN 923586-0003

Included Components

• 1x Garrett G-XRace GXR45-76 Supercore Assembly (compressor wheel, turbine wheel, center housing - no turbine housing)
• 1x Set of Water Fittings (for water-cooled center housing)

Product Description

The Garrett 952766-5001S is the GXR45-76 Supercore from Garrett's G-XRace line - a race-focused turbocharger assembly engineered for builds that have outgrown the G-Series platform and demand maximum airflow capacity at extreme power levels. The G-XRace line is built around Garrett's patent-pending XBoost Technology, which delivers up to +29% more compressor flow over comparable G-Series turbos, raises the pressure ratio ceiling for higher boost operation, and improves efficiency at elevated flow rates to deliver cooler, denser charge air. With a 76.7mm compressor inducer, 109mm exducer, and Inconel turbine wheel, the GXR45-76 is rated to support up to 1,650 HP - making it a serious tool for top-tier drag racing, time attack, and all-out performance builds.

One of the most practical aspects of the GXR45 platform is its direct compatibility with existing G-Series G45 turbine housings. Builders who are already running a G45 setup can upgrade to the G-XRace supercore without changing their manifold, exhaust configuration, or turbine housing - a significant cost and time advantage at the top levels of motorsport. The GXR45-76 Supercore uses a dual ceramic ball bearing center section for improved response and durability, features a flanged turbine speed sensor port for easy instrumentation, and ships with water fittings for water-cooled center housing configurations. Turbine housings in four A/R ratios (1.01, 1.15, 1.28, 1.44) are available separately in T4 divided or V-Band configurations to match the specific manifold and boost curve requirements of the application.

This is a Supercore - the rotating assembly and center housing only, without a turbine housing. A compatible GXR45 turbine housing must be sourced separately to complete the turbocharger unit. The GXR45-76 also supports optional integration with Garrett's G-Smart Bluetooth Module (PN 923586-0003) and compatible speed sensors (PN 781328-0003 or 781328-0004) for real-time turbo speed monitoring and data logging - sold separately. This product is intended exclusively for closed-course racing applications and is not legal for road use.