Supertech VW 1.8T 20V 82.5mm (+1.5) 29.5mm CH -14.8cc Dish 9:1 CR Piston - Set of 4 (Excl Rings)

Supertech is well-known for making robust engine components, and this set of four forged pistons for the VW 1.8T 20V engine continues that tradition. These pistons are designed for builders looking to refresh or upgrade their engine's core components. They feature a bore size of 82.5mm, which is a +1.5mm overbore from the stock size, and a compression height (CH) of 29.5mm. The dish volume is -14.8cc, resulting in a 9:1 compression ratio when installed in a compatible engine configuration.

Forged pistons are a strong choice for performance applications because they are manufactured from a solid block of aluminum alloy that is heated and then hammered into shape under extreme pressure. This process creates a much denser and stronger grain structure than cast pistons, making them more resistant to detonation, high cylinder pressures, and thermal stress. This particular set is designed as a direct replacement for the stock piston size with an overbore, meaning they fit right into the engine block with the appropriate machining. It's important to note that this set does not include piston rings, which will need to be purchased separately to complete the installation.

When rebuilding or modifying your 1.8T 20V engine, using well-built internal components like these Supertech pistons is crucial for reliability and performance. Remember that these pistons are not CARB approved and cannot be shipped to California. Always consult your engine builder or mechanic for specific installation requirements and compatibility with other engine components.