Supertech Mini R56 N18 JCW 1.6T 77.50mm Bore 10:1 CR Pistons- Set of 4 (Use w/GNH07750) (Excl Rings)

This set includes four Supertech forged pistons, each with a 77.50mm bore and a 10:1 compression ratio, designed for the Mini R56 N18 JCW 1.6T engine. These pistons are intended for use with the GNH07750 connecting rods and do not include piston rings, which must be purchased separately. They are a well-built component for engine rebuilds where improved performance and durability are key.

Forged pistons like these are constructed from a solid block of aluminum alloy that is heated and hammered into shape, making them significantly stronger and more resistant to detonation than cast pistons. This strength allows them to handle higher cylinder pressures and temperatures commonly found in performance applications. The 10:1 compression ratio is a common target for naturally aspirated or mildly boosted engines, offering a good balance between power and drivability. The 77.50mm bore size is specific to certain engine configurations, ensuring a precise fit within the cylinder walls when paired with the correct connecting rods.

When undertaking an engine rebuild with these pistons, it's important to ensure all supporting components are up to the task. This includes the connecting rods (specifically the GNH07750 model as recommended), crankshaft, bearings, and a proper engine management system to take advantage of the improved hardware. Due to their construction and intended use, these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed installation instructions and specifications for proper fitment and assembly.