Supertech Mini Cooper N14 1.6T 16V 77.5mm (+0.5) -5.5cc Dome 9.5:1 CR Piston - Set of 4 (Excl Rings)

This set includes four Supertech forged pistons, each measuring 77.5mm in bore diameter with a +0.5mm oversize. These pistons are specifically designed for Mini Cooper N14 1.6T 16-valve engines and feature a -5.5cc dome volume, which helps achieve a 9.5:1 compression ratio. Please note that piston rings are not included with this set and must be purchased separately.

Forged pistons are a strong choice for performance builds or when rebuilding an engine that demands more durability than stock cast pistons can offer. The forging process creates a denser, more uniform grain structure in the metal, making these pistons significantly more resistant to the stresses of higher compression, boost, or aggressive tuning. This particular set is designed to bring your engine's compression ratio down to 9.5:1, which is a common target for turbocharged applications where you might be increasing boost pressure and need to manage detonation. The 77.5mm bore size is a 0.5mm oversize, typically used when re-boring cylinders to clean up wear or slight damage, or to achieve a specific displacement increase.

When installing these pistons, it's crucial to follow the manufacturer's recommended clearances and installation procedures. Ensure your engine cylinders have been properly machined to the 77.5mm bore size and that you have the correct size piston rings to match. This set is intended for engine rebuilding and performance applications where enhanced durability and specific compression ratios are desired.