0.660" Lift Conical Valve Spring Kit

The COMP Cams Conical Valve Spring Kit is engineered to enhance the valvetrain performance of '09-'18 Dodge 5.7L HEMI engines. The conical (beehive) spring design contributes to reduced valve train mass and friction, optimizing performance. With a maximum valve lift capacity of 0.660 inches, this kit provides the proven RPM stability and performance required for demanding applications. Key specifications include a spring rate of 519 lbs/in and a coil bind height of 1.175 inches, ensuring reliable operation at high engine speeds. The use of lightweight titanium retainers further minimizes reciprocating weight. It is compatible with a wide range of Chrysler and Dodge vehicles, including various trims of the 300, Challenger, Charger, Durango, and Ram trucks, as well as certain Jeep Grand Cherokee and Commander models from 2009 to 2018.