Material: Piston ring materials Design and Style: Oversize (+0.5mm) STD Size Compatibility: Compatible with Countryman and Paceman 10–16 model year 1.6L engines equipped with N13B16A, N13B16, or N18B16 engine variants Shape and Size: Cylinder bore: 77.00 mm, Compression height: 28.5 mm, Land height: 5.5 mm, Length: 51.2 mm, Bolt length: 48 mm, Bolt diameter: 20 mm, Recess diameter: 34.7 mm Included Accessories: Piston and ring set, oversize +0.5mm This piston and ring set is designed as a direct replacement for the used in Countryman and Paceman 10–16 model year vehicles with 1.6L N13B16A, N13B16, or N18B16 engines.The set restores factory specifications and dimensions.Part number: 11257601181.