Supertech VW 1.8T 81.5mm Bore -4cc Dish 9.3:1 CR Pistons - Set of 4 (Rated 600HP/33PSI) (Excl Rings)

This set includes four Supertech forged pistons, each with an 81.5mm bore and a -4cc dish, designed to achieve a 9.3:1 compression ratio. These pistons are built to handle up to 600 horsepower at 33 PSI of boost, making them a solid choice for enthusiasts looking to significantly upgrade their VW 1.8T engine's performance. Please note that this set does not include piston rings.

Forged from high-strength aluminum alloy, these pistons are considerably stronger and more durable than cast pistons. This robust construction allows them to withstand the higher cylinder pressures and temperatures associated with boosted applications. The -4cc dish is specifically designed to work with certain cylinder head configurations to achieve the target 9.3:1 compression ratio, which offers a good balance between power output and drivability for modified 1.8T engines. The 81.5mm bore size is a common upgrade size for the 1.8T platform, often used when rebuilding or modifying the engine.

When installing these pistons, it's important to follow the manufacturer's recommended clearances and lubrication procedures. Because these are performance-oriented components, proper engine tuning is crucial to take full advantage of their capabilities and ensure long-term reliability. Remember that piston rings are sold separately, so be sure to order the correct set for your build.