Go Fast Bits FX-S Fuel Pressure Regulator with 1/8" NPT ports
The Go Fast Bits (GFB) FX-S Fuel Pressure Regulator is a compact, versatile solution for controlling fuel pressure with factory-like reliability and high-performance capability. Designed for EFI fuel systems, the FX-S is suitable for a wide range of fuels including unleaded, ethanol, methanol, and diesel, making it ideal for both street and motorsport applications.
Featuring 4x 1/8” NPT body ports and 1x 1/8” NPT return port, the FX-S supports multiple configurations — whether you need inlets, outlets, pressure gauges, or ECU sensor connections. It flows up to 750 LPH at 25 PSI, providing ample capacity for single or multi-pump setups.
Engineered with a replaceable Teflon co-polymer valve seat and spherical stainless valve, the FX-S seals securely, holding fuel pressure after shutdown for easier starts compared to conventional regulators. Reinforced double-layer diaphragms deliver a burst strength of over 500 PSI, ensuring durability under extreme conditions.
With an adjustable static pressure range of 25–80 PSI, the FX-S provides flexibility for tuning, while its 1:1 fuel pressure rise rate maintains consistent performance under boost. Completely serviceable and CNC precision-built, this regulator is a compact powerhouse for modern performance engines.
Key Features:
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High-quality EFI fuel pressure regulator, flows up to 750 LPH @ 25 PSI
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4x 1/8” NPT body ports for flexible fuel in/out, gauge, or ECU sensor setups
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1x 1/8” NPT return port for system integration
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Adjustable static pressure: 25–80 PSI
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1:1 fuel pressure rise rate for boosted applications
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Teflon co-polymer seat & stainless valve — holds pressure after shutdown
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Double-layer reinforced diaphragms with >500 PSI burst strength
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Works with unleaded, ethanol, methanol, and diesel
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Fully serviceable for long-term reliability
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Compact design for flexible installation in tight engine bays