CNC Fabrication Stage 1 Ovate Valve Spring Kit 03-10 Ford 6.0L/6.4L Powerstroke DE-K4214S-RP will have less exhaust back

will have less exhaust back pressure and you'll never have shrinking

5" remote reservoir shocks

thanks to thicker blades

No more trying to shine a flashlight through a muddy tank

CNC Fabrication Stage 1 Ovate Valve Spring Kit 03-10 Ford 6.0L/6.4L Powerstroke DE-K4214S-RP will have less exhaust backIf you're pushing your Powerstroke beyond stock power levels, factory valve springs can quickly become a weak link. The CNC Fabrication Stage 1 Ovate Valve Spring Kit is designed to provide the additional valve control needed for higher boost, increased RPM, and performance camshaft applications. By keeping the valvetrain stable under demanding conditions, these springs help reduce valve float, improve engine reliability, and give you the confidence