CP Piston & Ring Set for 02-06 Mini Cooper S 1.6L - Bore (78mm) - (+1.0mm) - 8.3:1 Comp Ratio - Sing

This is a CP Pistons forged piston and ring set specifically for the 2002-2006 Mini Cooper S with the 1.6L engine. If you're rebuilding the engine in your Mini Cooper S, especially if you're looking to handle increased boost or higher performance demands, a set of forged pistons like these is a solid choice. They are designed to be 1.0mm oversized from the factory bore, measuring 78mm, and feature a compression ratio of 8.3:1, which is lower than stock and ideal for boosted applications.

Forged pistons are made from a single billet of aluminum that's heated and hammered into shape, making them significantly stronger and more durable than cast pistons. This strength is crucial for withstanding the higher cylinder pressures and temperatures found in performance or modified engines. The 8.3:1 compression ratio is a notable detail, indicating these pistons are intended for use with forced induction setups like turbochargers or superchargers, allowing for more boost without risking detonation. This set includes the necessary rings to complete the piston assembly.

Please note that this piston set is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.