Supertech FORGED 82mm piston set made for the Audi and VW 1.8T engine. 9.3-1 cr. Set of 4 pistons with rings, wrist pins and circlips. Uses 20mm Tool Steel wrist pins for a perfect match to Our #105.100 H Beam Forged Connecting Rods. Made from high silicon enhanced 4032 alloy that has lower thermal expansion. Offset wrist pins for quieter operation. Cold extruded chrome moly steel wrist pins. Phosphate dry lubricant coating.