4pcs 11257566019 77 mm Piston Ring For 06-16 R55-R61 N14 TURBO Cooper Countryman Easy install Engines Components Pistons Upgrade your R55-R61 N14 TURBO Cooper Countryman with this 4-piece piston ring set designed for engines from 2006 to 2016.Constructed from aluminum, the pistons provide efficient heat dissipation and resistance to wear, supporting engine.The 77 mm bore size matches N14 engine specifications, proper fitment for replacement applications. The set includes 4 pistons, 12 piston rings, 4 wrist pins, and 8 snap rings, providing all necessary components for a full piston assembly replacement.Installation is straightforward, with no modifications required.Designed for direct fit compatibility, the components integrate into designated engine builds without the need for additional adjustments. This piston ring set supports engine performance and durability under normal operating conditions.The complete package allows for a comprehensive rebuild of the piston assemblies, contributing to consistent compression and engine efficiency. Compatibility Statement: This is a third-party replacement.Brand/model references serve only as compatibility indicators.