4.600" Bore - 1.5 - 1.5 - 3mm Plasma Moly Piston Ring Set - Zero Gap These Speedmaster aluminum water pump

These Speedmaster aluminum water pump pulleys are made from a 356 aluminum alloy that is heat-treated to T-6 specs

This casting process creates a much more uniform and robust cylinder head

Speedmaster TDS stepped up and created a full line of super-strong forged and billet yokes

Welcome to the new era in fuel injection

and work with stock components

4.600" Bore - 1.5 - 1.5 - 3mm Plasma Moly Piston Ring Set - Zero Gap These Speedmaster aluminum water pumpSpeedmaster piston rings are designed to stand up to the rigor of racing and high performance street use while providing a long lasting life. Speedmaster 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 excellent oil control; and 3 piece oil rings with stainless steel expanders