Speedmaster PCE306.1054 Bore Plasma Moly Piston Ring Set Zero Gap - 4.310 1.5/1.5/3mm

The Speedmaster PCE306.1054 piston ring set is engineered for high-performance street and racing applications, delivering exceptional sealing and durability in a 4.310" bore diameter configuration. This complete ring set features a 1.5mm-1.5mm-3mm ring spacing design with zero gap technology for maximum cylinder sealing.

Key Features:

• Plasma-moly coated barrel-shaped top rings constructed from ductile iron for superior wear resistance and heat dissipation
• Barrel-faced design maintains effective sealing even when pistons rock in the bore, preventing blow-by
• Tapered secondary compression rings seal against the oil control ring's upper surface for enhanced oil control
• 3-piece oil ring assembly with stainless steel expander provides precise tension without robbing horsepower
• Zero gap ring design ensures maximum compression sealing for race applications
• Ring dimensions: 1.5mm top compression, 1.5mm second compression, 3mm oil control

Designed to withstand the extreme demands of racing and high-performance street engines, these PCE piston rings combine advanced materials and proven ring designs to deliver long-lasting performance and reliability. The plasma-moly coating on the top ring provides excellent scuff resistance during break-in and reduces friction for improved ring life.