The GFB FX-S Bosch is a direct rail-mount adjustable fuel pressure regulator that replaces the factory Bosch-style regulator, letting you dial in base pressure from 1.4 bar to 5 bar without re-plumbing the fuel system.
It features 4x 1/8in NPT body ports plus a return port, flows up to 750 lph @ 25psi, and uses a double-reinforced diaphragm rated beyond 500psi burst with a Teflon co-polymer seat and spherical stainless valve. 1:1 rise rate, compatible with all fuels including E85.
Specifications
| Brand | Go Fast Bits |
| Series | FX-S Bosch Replacement |
| Type | Rail-mount adjustable fuel pressure regulator |
| Ports | 4x 1/8in NPT body, 1x 1/8in NPT return |
| Flow | Up to 750 lph @ 25psi |
| Base Pressure | 1.4-5 bar, adjustable |
| Rise Rate | 1:1 |
| Diaphragm | Double-reinforced, 500+ psi burst |
| Fuel Compatibility | All fuels incl. E85 |
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