Piston Set for Mini R55 R56 R57 1.6T N14B16A OE 11257566019
The BMW N14B16A piston kit (applicable to R55–R59 series Mini Cooper S/JCW models) typically features a standard bore of 77mm and a piston pin diameter of 20mm; the compression ratio for standard models is approximately 11:1. A typical kit includes four pistons, piston rings, and piston pins, with the piston rings having thickness specifications of 1.2mm, 1.5mm, and 2.0mm, respectively.
Description
Main Standard (STD) Specifications
Engine Model: 1.6L L4 16V Turbocharged (N14B16A/N14B16C) · Bore: 77.00 mm (Standard)
Oversize Options: +0.50 mm (77.50 mm) specifications available · Compression Ratio: 11:1 (Standard)
Compression Height: 28.50 mm
Piston Pin Diameter: 20 mm
Piston Pin Length: 48 mm
Piston Ring Thickness: 1st Ring 1.2 mm / 2nd Ring 1.5 mm / 3rd Ring 2.0 mm
Material: Typically Aluminum Alloy (ZL109)
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