Speedmaster PCE306.1062 Piston Ring Set Bore Plasma Moly Zero Gap - 4.600

The Speedmaster PCE306.1062 piston ring set is engineered for high-performance engines with a 4.600" bore diameter. This premium ring pack features a 1.5mm - 1.5mm - 3mm configuration designed to withstand the demanding conditions of racing and high-performance street applications while delivering exceptional durability.

Advanced Ring Design:

• Top Ring: Plasma-moly coated, barrel-shaped ductile iron construction provides superior wear resistance and seals effectively against blow-by even as the piston rocks within the cylinder bore
• Second Ring: Tapered profile design seals against the oil control ring's upper surface for excellent oil management and combustion sealing
• Oil Ring: 3-piece design with stainless steel expander delivers precise, consistent tension for optimal oil control across all operating conditions
• Zero Gap Configuration: Minimizes ring end gap blow-by for maximum compression and power output

The plasma-moly coating on the top ring provides exceptional scuff resistance during break-in and reduces friction for improved power transfer. This ring set is ideal for serious performance builds where reliability and sealing efficiency are critical.