Engineered for Motorsports & Race Use
maximum power & long-term durability
Built as part of Stanadyne’s new GX Series of GDI performance pumps, the RGX represents the pinnacle of race-focused fuel system engineering.
Unlike modified OE service pumps, the RGX is purpose-built from the ground up to safely deliver the extreme pressure, flow, and durability required by modern high-horsepower engines.
For builders, tuners, and race teams pushing their platforms to the limit, the RGX provides the fuel delivery foundation needed to unlock the next level of performance.
Purpose-Built Performance
The RGX fuel pump was developed specifically for high-output racing engines that demand reliable fuel delivery under the most aggressive operating conditions.
Maximum Fuel Volume
At the core of the RGX pump is Stanadyne’s improved Goliath large-plunger GDI architecture, featuring a 12-millimeter plunger and high-lift design.
For Modern Platforms
The GX Series was engineered to support many of today’s most popular high-performance vehicle platforms, including applications from Mercedes-AMG, Ford, BMW, GM, and Stellantis.
Unique Features
Performance Engineering
- Designed for high-stroke GDI applications (8mm+ stroke)
- Optimized internal high-flow fuel paths
- Nested return spring cam follower system
- Consistent high-pressure output at extreme RPM
Advanced Fuel Delivery Technology
- Improved Goliath large-plunger architecture
- 12mm plunger, high-lift pump design
- ~50% more volume than SP1250 pumps
- ~22% more volume than SP1550 pumps
- Finite element-validated structural design
Real-World Performance & Compatibility
- Dyno-proven high-horsepower performance
- Supports 800-1,400+ horsepower builds
- Compatible with Mercedes-AMG, Ford, BMW, Stellantis, GM platforms
Design & Specifications
Horsepower Capacity (with E85 fuel)
Bar Pressure
Engine Speed
FEATURE | SPECIFICATION |
|---|---|
| Pump Description | Single plunger GDI pump, electronic demand controlled |
| Discharge Pressure | Two Variants: 200 Bar max & 350 Bar max |
| Inlet Pressure | 5 +/-0.2 Bar |
| Max Speed (@ Full Function) | 2110.9 mm3/rev @ 3,500 prpm, 200 Bar rail pressure with 7.85mm fuel lobe cam lift |
| Pressure Relief Valve | Internal |
| Flow Control | Electronic peak time and hold (PWM), normally open |
| Driver | PWM is variable based on voltage and pumps RPM |
| Pump Cam | 3 Lobe |
| Fuel Pump Lifter/Follower | GM Style LT4 Style |
| Fuel Lobe Cam Lift | 8.2 mm max. |
| Inlet Connector Options | SAE J2044 quick connect style |
| Discharge Connector Options | M14 Threaded with 60° internal cone, special |
| Fuel Compatibility | Gasoline, E10-E85, M15 |
| Environmental Temps. | -40 – +125° C |