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CP Pistons single replacement for BMW N20B20, N55B30 and S55B30 engines, available in the listed bore (3.307 in) and compression ratios of 9.4:1, 10.2:1 or 9.7:1 depending on application. Sold as a single piston, this part provides a direct piston option for the specified BMW four- and six-cylinder engines where the exact bore and compression choice matches the build requirements.
CP Piston BMW N20B20/N55B30/S55B30 (4 & 6 Cyl) Bore (3.307in) - 9.4:1 / 10.2:1 / 9.7:1 CR - SINGLE
