The Garrett CHRA – G-Series II G25-700 represents the next evolution of Garrett’s proven G-Series platform, engineered for enthusiasts and professional builders who demand more performance from a familiar footprint. Designed as a direct upgrade path for existing Gen I customers, this CHRA delivers advanced compressor aerodynamics without requiring a change to your existing turbine or compressor housings. It’s the ideal choice for builders seeking a calibrated horsepower increase while retaining proven Gen I housing compatibility.

Specifications

• Turbine Wheel Material: Mar-M alloy, rated up to 1050° C
• Turbine Housing Material: Stainless steel, rated up to 1050° C
• Rotation Configurations: Standard and reverse rotation available
• 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
• Inlet V-Band Flange (Turbo Manifold): ATP-FLS-350
• Outlet V-Band Flange (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
• Garrett P/N: 934074-5002S

Performance & Application

The G25-700 CHRA is built for existing G-Series Gen I owners who want to unlock additional performance without replacing their current compressor or turbine housings. Thanks to new compressor aero technology, this CHRA delivers increased efficiency at high flow rates, translating to greater top-end performance potential. Available in both standard and reverse rotation configurations, it offers flexibility for a wide range of turbo system layouts. A recalibration is required to fully realize the available horsepower upgrade, making this an ideal option for tuners and builders ready to extract more from their platform.

Frequently Asked Questions

What is the Garrett G-Series II G25-700 CHRA designed for?

It serves as a direct upgrade path for Gen I customers, available as a complete turbo unit, supercore, or standalone CHRA purchase.

Does the G-Series II require new compressor or turbine housings?

No, G-Series II utilizes Gen I compressor and turbine housings.

How much more flow does the G25-700 CHRA offer compared to Gen I?

It provides 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 my engine to take advantage of the upgrade?

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

What rotation options are available for this CHRA?

The G25-700 CHRA is available in both standard and reverse rotation configurations.

For Gen I G-Series owners looking to extract more performance without a full housing swap, the Garrett CHRA – G-Series II G25-700 delivers proven upgraded aerodynamics, high-temperature durability, and flexible rotation configuration in a direct-fit package.

Downloads

• Garrett-G-Series-II-Product Flyer