09/17/2026
🔥 UPGRADE YOUR FUEL SYSTEM — WITHOUT REPLACING THE RAIL 🔥
Still running the OEM fuel rail on your 99–04 Lightning or 02–03 Harley? We’ve got the upgrade you need.
💥 GFB FX-S 8051 Fuel Pressure Regulator
A direct-fit replacement for the factory Bosch clip-in regulator — giving your fuel system the flow and adjustability it needs for higher-performance setups.
✅ Direct fit for OEM 99–04 Lightning / 02–03 Harley fuel rail
✅ More than 2X the flow of the factory regulator
✅ Adjustable from 20–72 PSI
✅ Compatible with gasoline, E85/ethanol & methanol
✅ 1/8" NPT port for a fuel pressure gauge or sensor
✅ Reinforced dual-layer diaphragm
✅ Teflon valve seat for improved pressure retention after shutdown
✅ Fully serviceable
💡 Running a larger fuel pump? Don’t overlook the regulator. The factory Bosch unit can become a restriction as fuel demand increases. This lets you support a larger pump without replacing the factory fuel rail.
🛒 Available now at GAPerformanceLLC.com
👉 Shop here: https://gaperformancellc.com/products/fuel-pressure-regulator-bosch-rail-mount-replacement