N12 N16 11257589348 Engine Piston & Ring Kit 77mm STD Set for R55 R56 R57 R58 R60 Cooper Countryman Paceman 2006-2016 Upgrade the engine performance of your R55-R60 Cooper Countryman or Paceman with the N12 N16 11257589348 Engine Piston & Ring Kit.This set is engineered to support efficient engine and consistent performance.Constructed from aluminum, the pistons offer and thermal efficiency, while the standard 77mm bore size ensures compatibility with applicable engine models.The kit is designed to meet specifications, providing function for both daily and performance driving conditions.This piston and ring set includes 4 complete piston and ring assemblies, making it suitable for full engine rebuilds or performance.The components are crafted to maintain proper compression, support effective combustion, and reduce engine wear over time.Intended for use in R55, R56, R57, R58, and R60 platforms from model years 2006 to 2016, this kit integrates into the N12 and N16 engine architectures.It is a practical solution for maintaining or restoring engine integrity during repair or overhaul procedures.