Revised spring for the Radium family of fuel pressure regulators. Like the standard zinc-plated spring, this stainless steel replacement still allows fuel pressure adjustments from 20psi-up. However, this spring was specifically designed to improve the "linear" adjustment from 60psi to 80psi. If a base static fuel pressure over 60psi is required, this is a perfect upgrade.
1. Compatible with the Radium MPR, DMR, and FST-R.
2. Drop-in replacement, no other parts are required.
3. Come standard in ALL units starting November 2016.