Wiseco Audi ADU 2.2L 20V 81.50 mm Bore 32.80 mm CH -21.00 CC Piston Set

If you're rebuilding the engine in your 1992-1994 Audi S4 for serious performance, these Wiseco Professional Series pistons are a solid choice. These pistons are specifically made for the ADU 2.2L 20V engine and are designed to handle the demands of heavy to severe duty race applications. They are forged and machined in the USA from 2618 aluminum, which gives them improved tensile strength for high-stress environments.

Wiseco has packed these pistons with features to ensure performance and durability. You'll find precision ring grooves, anti-detonation grooves, and other features designed to improve ring seal. The fully machined crown ensures accuracy, and the forced pin oiling helps keep the wrist pins lubricated. Plus, the ArmorGlide skirt coating helps reduce friction, resist seizure, and operate more quietly. This set includes five pistons, ready for your build.

These pistons are designed for builders who are pushing their engines hard. Remember that these are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly details.