Speedmaster Plasma Moly Piston Ring Set

Speedmaster Plasma Moly Piston Ring Sets are performance engine piston rings built to seal combustion pressure, control oil, and hold up in demanding conditions. Each set includes a top ring, a second ring, and an oil ring. The line is offered in a range of bore diameters and ring thicknesses to suit many semi-universal performance engine builds.

Key Features:

• Plasma-moly top ring: The ductile iron top ring has a barrel-shaped, plasma-moly coated face. It seals against blow-by as the piston rocks in the bore.
• Tapered second ring: The cast iron second ring seals against the upper surface of the oil control ring. This helps control oil.
• 3-piece oil ring: The oil ring has a stainless steel expander. It gives accurate tension without robbing horsepower.
• Made in the USA: Speedmaster piston rings are made in the USA.
• Semi-universal design: The sets are sold as a set. Depending on the part number, they are available in different bore sizes and in metric or fractional ring thickness configurations.

These rings are intended for racing applications only and are not for street use. Choose the bore and ring thickness that match your pistons.