Ferrea Valve Springs and Retainers Kit for Focus 3 RS / Mustang S550 2.3 Ecoboost

This Ferrea Racing valve spring kit for the 2.3T Ecoboost engines found in the Focus 3 RS and Mustang S550 is a full intake and exhaust combo coming with precision wound valve springs, titanium retainers, seat locators and valve locks ! Ready to install with any kind of valves, this set will bring your built cylinder head the safety you want under high pressures, rev or temps !