Supertech 4032 Forged Piston Set for Miata 1.8L 85mm Bore 10cc Dome 11:1 CR

Supertech Forged Piston Kit for Mazda 1.8 Miata BP

Supertech Pistons are manufactured from extruded high-silicone, enhanced 4032 alloy (with additional Cu, Ni, and Mg) that has low thermal expansion, excellent wear resistance, and higher thermal conductivity. This makes them ideal for high-performance street and racing environments where strength, temperature stability, and long service life are critical.

Each piston is engineered for precision and performance, featuring a lightweight [Weight] design, +2mm overbore, and a round skirt profile to reduce friction and optimize combustion. Perfect for builders and enthusiasts requiring consistent power delivery and long-lasting reliability across a range of engine configurations.

Features

Forged from extruded high-silicone, enhanced 4032 alloy (with additional Cu, Ni, and Mg) that offers low thermal expansion and excellent wear resistance

Precision CNC-machined and multi-stage heat treated for grain uniformity

Phosphate dry-lubricant coating on ring grooves and piston skirt

+2mm oversize bore for expanded displacement and tuning flexibility

[Weight] piston weight optimized for quick acceleration and reduced stress

round skirt style enhances piston stability and reduces drag

Benefits

Excellent wear resistance and higher thermal conductivity

Superior dimensional stability under extreme loads and heat

Reduced piston-to-wall clearance for quieter operation and better sealing

Reliable for naturally aspirated, turbocharged, or nitrous-assisted setups