The Garrett Supercore G-Series II G30-725 is engineered for performance enthusiasts and Gen I G-Series owners looking to unlock more power without starting from scratch. Built with new compressor aero technology, this supercore delivers a genuine upgrade path while retaining compatibility with existing Gen I compressor and turbine housings. It’s the ideal choice for builders who demand both durability and a measurable performance gain from their turbo platform.

Specifications

• Garrett P/N: 934117-5001S
• Compressor Flow Improvement: Up to 10% higher compressor flow compared to G-Series Gen I at peak pressure ratio and peak turbo RPM
• Housing Compatibility: Utilizes Gen I compressor and turbine housings
• Rotation Configurations: Standard and reverse rotation available
• Turbine Wheel Material: Mar-M alloy, rated up to 1050° C
• Turbine Housing Material: Stainless steel, rated up to 1050° C
• Inlet V-Band Flange (For Turbo Manifold): ATP-FLS-350
• Outlet V-Band Flange (For Down-pipe): ATP-FLS-351
• Oil Drain Flange: ATP-FLA-010
• Oil Drain Gasket: GRT-GSK-008
• Oil Drain Fasteners: MIA-FST-034
• Boost Pressure Port Fitting: ATP-FTG-198
• Speed Sensor Kit: ATP-ACS-032

Performance & Application

The G30-725 Supercore is purpose-built as a direct upgrade path for Gen I G-Series customers, available as a complete turbo unit, supercore, or standalone CHRA purchase. With increased efficiency at high flow rates, this platform is designed to deliver more usable power for builders pushing beyond stock turbo limits. Proper calibration is required to fully realize the increased flow potential and corresponding horsepower gains. Whether configured for standard or reverse rotation, this supercore is built to handle the demands of serious performance applications.

Frequently Asked Questions

Does the G-Series II G30-725 work with my existing Gen I housings?

Yes, the G-Series II utilizes Gen I compressor and turbine housings, making it a direct upgrade path for Gen I customers.

How much more flow does the G30-725 Supercore offer compared to Gen I?

The G30-725 delivers up to 10% higher compressor flow compared to G-Series Gen I at peak pressure ratio and peak turbo RPM.

Do I need to recalibrate after installing this supercore?

Yes, calibration is required to take advantage of the increased flow for a horsepower upgrade.

What rotation options are available for this turb

Downloads

• Garrett-G-Series-II-Product Flyer