Garrett 934174-5006S G-XRace GXR57-98 XBoost Supercore 98mm/149mm Racing Turbo

Vehicle Fitment

• Universal - compatible with professional motorsport and drag racing applications on 3.0L-12.0L engine platforms; requires a compatible G-Series G57 turbine housing

Fitment Notes

• Supercore only - a G-Series G57 turbine housing is required and sold separately; available in three V-Band stainless steel housings at 1.09 A/R, 1.25 A/R, and 1.41 A/R
• G-XRace GXR57 supercores use the same G57 turbine housings as the G-Series G57 platform, enabling a direct upgrade from a G57 supercore without changing the turbine housing
• Designed for professional motorsport and extreme drag racing competition - not for street use on public roads
• Speed sensor port machined into compressor housing - compatible with p/n 923586-0003 (G-Smart Bluetooth Module), 781328-0003 (street kit with gauge), or 781328-0004 (pro kit without gauge), all sold separately
• Maximum allowable turbocharger speed: 84 krpm - use above this speed is at owner's risk
• Not CARB legal - for competition and off-road race use only; not for sale in California

Features

• XBoost technology delivers enhanced compressor flow beyond the G-Series G57-2550 98mm, with improved pressure ratio capability and higher efficiency at extreme airflow levels
• 98mm compressor inducer / 149mm compressor exducer - maximum compressor wheel configuration in the GXR57-98 lineup for the highest power potential in the G57 frame
• Built on Garrett's G57 turbine frame: 118mm / 112mm Inconel turbine wheel with 28% more turbine flow than the previous GTX Gen II platform
• Lower intake temperatures via improved compressor efficiency for denser charge air and more power per unit of displacement
• Lightweight one-piece aluminum backplate reduces overall supercore weight
• Fully machined flange-style speed sensor port for turbo shaft speed monitoring and overspeed protection
• Compatible with all G-Series G57 V-Band turbine housings - seamless upgrade path from G57 without changing exhaust hardware
• Designed for Radial vs. the World, extreme drag racing, and other high-horsepower motorsport applications

Specifications

• Part Number: 934174-5006S
• Series: G-XRace GXR57-98
• Compatible Engine Displacement: 3.0L-12.0L
• Compressor Inducer: 98mm
• Compressor Exducer: 149mm
• Turbine Frame: G57
• Turbine Wheel: Inconel, 118mm Inducer / 112mm Exducer (90 Trim)
• Technology: XBoost (increased compressor flow and pressure ratio vs. G-Series G57)
• Center Housing: Lightweight One-Piece Aluminum Backplate
• Speed Sensor Port: Yes - Fully Machined Flange-Style (sensors sold separately)
• Max Turbocharger Speed: 84 krpm
• Compatible Turbine Housings: G-Series G57 V-Band housings - 1.09 A/R, 1.25 A/R, 1.41 A/R
• Sold As: Supercore Only (turbine housing not included)

Included Components

• 1x Garrett G-XRace GXR57-98 Supercore (98mm/149mm compressor, G57 118mm/112mm turbine wheel)
• Note: G57 turbine housing, speed sensor, and installation hardware sold separately

Product Description

The Garrett 934174-5006S is the GXR57-98 supercore from Garrett's G-XRace series - the latest generation of extreme motorsport compressor technology built on the proven G57 turbine platform. Announced in May 2026, the GXR57 brings XBoost compressor aerodynamics to the G57 frame, increasing flow capability and pressure ratio performance beyond what the G-Series G57-2550 98mm delivers. With a 98mm compressor inducer and 149mm exducer, this supercore is engineered for the highest horsepower drag racing applications including Radial vs. the World and other extreme competition classes.

The GXR57-98 is supercore-only and pairs with any G-Series G57 V-Band turbine housing (1.09, 1.25, or 1.41 A/R), making it a direct drop-in upgrade for builders already running a G57 setup. The G57 turbine wheel - with its 118mm inducer, 112mm exducer, and 28% more flow than the GTX Gen II - provides the exhaust energy recovery to fully exploit the GXR57's expanded compressor capability. A machined speed sensor port is included for optional turbo shaft speed monitoring. Turbine housing, speed sensor, and hardware are sold separately.