CNC Fabrication Stage 2 Ovate Valve Spring Kit 03-10 Ford 6.0L/6.4L Powerstroke

When your Powerstroke is built for serious horsepower, factory valve springs simply aren't up to the task. The CNC Fabrication Stage 2 Ovate Valve Spring Kit is engineered for high-performance builds that demand maximum valvetrain control under extreme boost and elevated RPM. By preventing valve float and maintaining precise valve operation, these springs help protect your engine while unlocking the confidence to push harder on the street, at the track, or under heavy load. If your build includes an aggressive camshaft, upgraded turbocharger, or is chasing big power, this is the valvetrain upgrade that keeps everything working together. Manufactured from premium ovate wire, the Stage 2 valve springs deliver increased spring pressure, exceptional fatigue resistance, and long-term durability. Each kit includes new spring retainers and keepers to provide a complete, reliable installation. At the same time, the precision-engineered design maintains consistent seat and open pressures for superior valve control in demanding applications. Built specifically for high-horsepower 03–10 6.0L and 6.4L Powerstroke engines, these springs are designed to withstand the abuse of high cylinder pressures and sustained high-RPM operation, making them an ideal choice for serious performance builds.