The Garrett G25-700 G-Series II represents the next evolution of Garrett’s proven G25 platform, built for enthusiasts who demand more from their turbocharger without sacrificing the reliability that made the original G-Series a benchmark. Featuring a 0.49 A/R T25 turbine housing paired with a V-Band internal wastegate outlet, this unit is engineered as a drop-in performance upgrade for existing Gen I setups. It’s the choice for builders who want measurable gains in flow and efficiency while retaining compatibility with their current housing investment.
Specifications
- Model: G25-700
- A/R Ratio: 0.49
- Turbine Flange: T25
- Compressor Outlet: V-Band IWG (Internal Wastegate)
- HP Capacity: Up to 700 HP
- Bearing Type: Dual-ball bearing
- Turbine Wheel Material: Mar-M alloy, rated up to 1050°C
- Turbine Housing Material: Stainless steel, rated up to 1050°C
- Compressor Flow: Up to 10% higher than G-Series Gen I at peak pressure ratio and peak turbo RPM
- Rotation Configurations: Standard and reverse rotation available
- Garrett P/N: 934076-5004S
Performance & Application
The G25-700 is designed for builders looking to extract more performance from the proven G-Series platform while maintaining compatibility with Gen I compressor and turbine housings. Calibration is required to unlock the increased flow potential and realize the horsepower gains this upgraded compressor aero technology provides. Improved efficiency at high flow rates makes this turbo well suited for applications pushing toward the top of its power range, where Gen I units began to run out of headroom. Available in both standard and reverse rotation configurations, it offers flexibility for a wide range of turbo system layouts.
Frequently Asked Questions
- What HP can the G25-700 support?
- The G25-700 is rated to support up to 700 HP.
- Is this a ball bearing or journal bearing turbo?
- The G25-700 uses a dual-ball bearing design.
- What is the A/R ratio of this turbine housing?
- This unit uses a 0.49 A/R T25 turbine housing.
- Can this turbo be used to upgrade an existing Gen I G25 setup?
- Yes, the G25-700 provides a direct upgrade path for Gen I customers as a complete turbo unit, supercore, or CHRA purchase, and utilizes Gen I compressor and turbine housings.
For builders seeking a straightforward, calibrated upgrade path from Gen I performance with genuine gains in compressor flow and high-RPM efficiency, the Garrett G25-700 G-Series II delivers exactly that — backed by Garrett’s engineering and proven durability.
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