The Garrett G25-585 G-Series II represents the next evolution of one of the most respected turbocharger platforms in performance motorsport. Built for enthusiasts who demand more from their G25 platform without sacrificing proven housing compatibility, this .72 A/R V-Band / V-Band IWG configuration delivers refined compressor aerodynamics for builders chasing more power from a familiar footprint. It’s the ideal choice for Gen I G25 owners looking for a direct upgrade path, whether replacing a complete unit, stepping up to a supercore, or rebuilding with a new CHRA.

Specifications

• A/R Ratio: .72
• Turbine Housing Inlet: V-Band
• Wastegate Configuration: Internal Wastegate (IWG), V-Band outlet
• Turbine Wheel Material: Mar-M alloy, rated up to 1050° C
• Turbine Housing Material: Stainless steel, rated up to 1050° C
• Rotation: Standard and reverse rotation configurations available
• Compressor Flow Improvement: Up to 10% higher compressor flow compared to G-Series Gen I at peak pressure ratio and peak turbo RPM
• Inlet V-Band Flange (For Turbo Manifold) P/N: ATP-FLS-350
• Outlet V-Band Flange (For Down-pipe) P/N: ATP-FLS-351
• Oil Drain Flange P/N: ATP-FLA-010
• Oil Drain Gasket P/N: GRT-GSK-008
• Oil Drain Fasteners P/N: MIA-FST-034
• Boost Pressure Port Fitting P/N: ATP-FTG-198
• Speed Sensor Kit P/N: ATP-ACS-032
• Actuator Options: Standard, 1 Bar
• Garrett P/N: 934076-5002S

Performance & Application

The G25-585 G-Series II retains compatibility with Gen I compressor and turbine housings, making it a seamless upgrade for existing G25 platforms while unlocking measurable gains in compressor efficiency at high flow rates. Builders can expect improved flow characteristics over the peak pressure ratio and peak turbo RPM range compared to the original G-Series, translating into a horsepower upgrade path when properly calibrated. The Mar-M alloy turbine wheel and stainless steel turbine housing are engineered to withstand extreme thermal loads, supporting sustained high-performance use. This configuration is suited to enthusiasts and tuners running a V-Band manifold and downpipe setup with an internal wastegate.

Frequently Asked Questions

What is the A/R ratio of the G25-585?

This G25-585 turbocharger uses a .72 A/R turbine housing.

Is this a V-Band or fl

Downloads

• Garrett-G-Series-II-Product Flyer