Garrett Turbo G-Series II G25-585, Reverse Rotation, .92 A/R V-Band / V-Band IWG, P/N: 934115-5002S

The Garrett G25-585 G-Series II represents the next evolution of Garrett’s proven G-Series platform, engineered for enthusiasts and professional builders who demand more from their turbo without sacrificing the reliability that made the original G-Series a benchmark. Featuring reverse rotation and an internally wastegated V-Band configuration, this unit is built for serious power upgrades on platforms already running Gen I G-Series hardware. It’s the direct path forward for anyone chasing more flow and efficiency from a trusted architecture.

Specifications

• Model: G25-585
• Rotation: Reverse Rotation
• A/R Ratio: 0.92
• Wastegate Configuration: V-Band / V-Band Internal Wastegate (IWG)
• 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
• Garrett P/N: 934115-5002S

Performance & Application

The G-Series II utilizes Gen I compressor and turbine housings while delivering up to 10% higher compressor flow compared to G-Series Gen I at peak pressure ratio and peak turbo RPM. This translates to increased efficiency at high flow rates, giving builders more headroom for horsepower gains once the calibration is updated to take advantage of the added flow. It’s designed as a drop-in upgrade path for existing Gen I G-Series customers, available as a complete turb

Downloads

• Garrett-G-Series-II-Product Flyer