Unleash the potential of your EJ20 with the
ultimate bolt-on turbo
The GCG G Series II G25 Bolt-On Turbo EJ20 is a turbocharger specifically designed for the EJ20 (EJ207), featuring a newly developed dedicated compressor housing and turbine housing to allow the Garrett G Series II to be bolted directly to the OEM turbine position.
It aims for the same spool characteristics as the OEM turbo while significantly increasing intake airflow,
boosting torque and power across the entire RPM range.
- G SERIES II / G25
- EJ20 Twin Scroll
- Bolt-On MK2
- Oil/Water Cooled
- Ball Bearing
Target
Exhaust
Cooling
Lineup
Latest Engineering
Designed to achieve overwhelming power and torque by combining the high-efficiency compressor of the Garrett G Series II
while maintaining the low-to-mid-range response and usability of the EJ20 twin scroll.
Dedicated Design for OEM Position
Bolt-on design based on the OEM position and flange shape.
Allows for an update to the latest turbo with a balance of spool and top-end power.
Configuration Designed for High Load Applications
Features oil/water cooling and ceramic ball bearings,
providing stable operation even under high load conditions.
G25-585 / G25-700 Comparison
You can choose between response-oriented or versatility-oriented depending on your application and stage characteristics.
| Item | G25-585 | G25-700 |
|---|---|---|
| Recommended Scene | Gymkhana・Primarily low-speed stages | Circuit・Primarily high-speed stages |
| Characteristics | Emphasizes low to mid-range. Quick spool for tight corner exits and short acceleration zones. | Versatile for a wide range of applications. Focuses on overall balance from street to circuit. |
| How to Choose (Key Points) | When prioritizing initial response for competitions/stages with many low-speed sections. | Basic choice when usage is wide-ranging / conditions are unpredictable. Choose this if unsure. |
Standard Kit Contents
Product Specifications
Compatibility and Installation Notes
Target: JDM models only (assumes EJ207 + twin scroll type exhaust manifold)
GRB / VAB: Due to the position of the turbine support stay, a spacer is required between the exhaust manifold and the turbine support stay (optional setting available).
GDB Applied A/B (Round Eye): Not fundamentally compatible because the turbine support pipe flange has a single scroll shape.
However, it can be installed by replacing the oil pan / turbine support pipe / exhaust manifold / water line with those from a GDB C-type or later.
