TSP .660" POLISHED Dual Spring Kit w/ PAC Valve Springs, Titanium Retainers, & PRC Integrated Seat/Seal

This dual valve spring kit includes a patent-pending integrated seat and seal, designed for use with factory-size valve guides. It is made by Texas Speed & Performance in collaboration with PAC Racing.

• The description claims this kit improves durability and stability.
• The description claims it works well with factory-style lifters.