A dry kit introduces only nitrous oxide without extra fuel

improved heat resistance

Built on the G4X platform

The included high-grade steel retainers undergo meticulous CNC machining

The BMW M50

BMW S54 Valve Spring Kit by Ferrea Supra A dry kit introduces onlyFerrea valve springs for BMW S54 engines are designed to address three critical issues that can compromise high performance engines: binding, breakage, and valve float. Prevent Engine Binding, Breakage, and Valve Float Engine binding occurs when valves fail to properly open or close, risking severe damage. Valve breakage can result in catastrophic failure as valves drop into the combustion chamber. Additionally, valve float, often caused by inadequate