Radium Engineering FPR Spring- Wide Range (Use with Radium MPR, DMR, and FST-R)

The Radium Engineering FPR Spring- Wide Range (Use with Radium MPR, DMR, and FST-R) controls EFI fuel pressure and returns excess fuel so injectors see a stable, tunable pressure supply. Radium regulators are intended for performance return-style systems where consistent pressure control is important as fuel demand and manifold pressure change.

A fuel return must be routed back to the tank or surge tank. Match regulator port sizes and pressure range to the fuel-system design.