Seller notes

Piston Ring Set 4.040 BoreTop Ring Thickness: 1/16"Second Ring Thickness: 1/16"Oil Ring Thickness: 1/8" Procomp Electronics piston rings are designed to stand up to the rigor of racing and high-performance street use, while providing a long lasting life. Procomp Electronics piston rings feature: Plasma-moly coated, barrel-shaped, ductile iron top rings that seal against blow-by when the piston rocks in its bore; tapered secondary rings that seal against the oil control ring's upper surface for e...

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