Speedmaster PCE306.1018 4.020" Bore 1/16 1/16 3/16 Plasma Moly Piston Ring Set

4.020" Bore - 1/16 - 1/16 - 3/16 Plasma Moly Piston Ring Set PCE piston rings are designed to stand up to the rigor of racing and high-performance street use, while providing a long lasting life. PCE piston rings feature: Plasma-moly coated, barrel-shaped, ductile iron top rings that seal against blow-by when the piston rocks in its bore Designed to stand up to the rigor of racing and high-performance street use