Supertech Mazda Miata 1.8L 83.5mm Bore 2.5cc Dome 9.5:1 CR Pistons - Set of 4 (Excl Rings)

The Supertech Performance P4-MA8350-P2 is a set of four pistons designed for the Mazda Miata 1.8L engine. These pistons are manufactured from an enhanced 4032 alloy with added copper, nickel, and magnesium, offering low thermal expansion, excellent wear resistance, and higher thermal conductivity.

The pistons feature a 9.5:1 compression ratio, a 83.5mm bore, a 30.5mm compression height, and a 2.5cc dome volume. They are constructed using a two or three-step forging process and undergo multiple machining and heat treatment steps for high tensile strength and uniform hardness. The pin bores are honed and reamed for precise fit, and they include cold-extruded chrome moly steel wrist pins with wire clip locks. A phosphate dry lubricant coating is applied for ring protection and skirt lubrication.