The Supertech piston set for VW 1.8T 20V fits an 82mm (+1) bore with a 32.7mm crown height and a -4cc dish, yielding a 9.3:1 compression ratio; supplied as four pistons without rings. Use this kit for 1.8T engine rebuilds where the stated oversize and crown dimensions are required to restore proper combustion volume and piston clearance.
Supertech VW 1.8T 20V 82mm (+1) CH 32.7mm -4cc Dish 9.3:1 CR Piston - Set of 4 (Excl Rings)