Garrett G-XRace GXR55-88 Turbo Super Core | 934174-5007S | X275 Legal 88mm Competition Turbo

Built to Dominate the 88mm Rule

The Garrett G-XRace GXR55-88 Super Core (934174-5007S) is Garrett's next-generation competition turbocharger designed specifically for racers competing in 88mm inducer limited classes, including X275 and other sanctioning bodies utilizing an 88mm compressor inducer rule.

Powered by Garrett's revolutionary patent-pending XBoost Technology, the GXR55-88 produces 21% more compressor flow than the outgoing G55-1950 while maintaining legal 88mm inducer dimensions. The result is greater airflow, improved efficiency, lower intake temperatures, and increased power potential without changing compressor size.

The GXR55-88 utilizes the proven 106mm turbine wheel and accepts the same turbine housings used on the popular Garrett G-Series GT55 platform, making upgrades simple for existing Garrett customers.

Please verify your racing organization's rulebook before purchasing. It is the customer's responsibility to ensure this turbocharger complies with class regulations.

Product Features

• Genuine Garrett Performance Turbocharger
• Garrett Part Number: 934174-5007S
• G-XRace GXR55-88 Super Core
• Patent Pending XBoost Technology
• 21% More Compressor Flow vs Garrett G55-1950
• Higher Pressure Ratio Capability
• Supports Higher Boost Pressure
• Increased Compressor Efficiency
• Lower Intake Air Temperatures
• Lightweight Aluminum Backplate
• Fully Machined Flange-Style Speed Sensor Port
• Easy Turbo Speed Sensor Installation
• Designed for X275 and Other 88mm Limited Racing Classes
• Uses Existing Garrett G-Series GT55 Turbine Housings

Turbo Specifications

Available Turbine Housing Options

Compatible with the same turbine housings used on Garrett G-Series GT55 turbochargers.

Why Choose the GXR55-88?

For racers competing under strict 88mm inducer rules, every pound of airflow matters. Garrett's XBoost Technology extracts substantially more performance from the same legal compressor size, delivering cooler charge air, improved compressor efficiency, and significantly greater airflow than the previous-generation G-Series.

Whether you're chasing ET records in X275, radial racing, or other heads-up classes, the GXR55-88 is engineered to maximize performance while staying within the rules.

Why Buy From Momentum Worx?

Momentum Worx is your source for genuine Garrett Performance turbochargers. We stock the latest G-XRace products and can help you select the correct turbine housing and A/R for your specific racing combination.

Questions about housing selection or horsepower goals? Contact our turbo specialists and we'll help you build the perfect combination.