Supertech VW 1.8T 20V 82mm (+1) CH 32.7mm -4cc Dish 9.3:1 CR Piston - Set of 4 (Excl Rings)

This is a set of four Supertech forged pistons specifically made for VW 1.8T 20V engines. These pistons are sized at 82mm, which is a +1mm overbore from the stock size, and feature a 32.7mm compression height. They are designed with a -4cc dish to achieve a 9.3:1 compression ratio, making them a solid choice for rebuilding or upgrading your engine. Since these are forged pistons, they offer a significant improvement in strength and durability over cast pistons, which is essential for engines that see higher performance demands or are being rebuilt with more aggressive modifications.

The 82mm bore size means these pistons are intended for engines that have been bored out to match this dimension, often done during an engine rebuild to restore cylinder walls or to increase displacement. The 9.3:1 compression ratio is a popular target for many performance applications, offering a good balance between power output and pump gas drivability. It's important to note that this set does not include piston rings, so you will need to source those separately. Supertech is known for producing well-built engine components, and these pistons are designed to handle the stresses of performance driving.

When installing these pistons, ensure your engine block has been properly machined to the 82mm bore size and that all cylinder wall tolerances are met. Proper balancing of the rotating assembly is also crucial when installing new pistons. This set is not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for detailed installation procedures and torque specifications.