Mahle MS Piston Set BBC 555ci 4.560in Bore 4.25in Stroke 6.385in Rod .990 Pin 38cc 13.5 CR Set of 8 PartNumber : mhl928980260 Description : Mahle MS Piston Set BBC 555ci 4.560in Bore 4.25in Stroke 6.385in Rod .990 Pin 38cc 13.5 CR Set of 8 Engine Components::Piston Sets - Forged - 8cyl