This is a set of four 160mm (actually 158mm but they are more than long enough for cylinders using a standard length crank) studs from MRB / MBD, made from high tensile steel and chemically Blacked. These are to stop 4-point seizes on the barrel and piston, especially useful on the bigger kits where there is very little barrel 'meat' between the stud and the piston. These are not long enough to run with 'stroked' cranks, longer rods or packer plates.
Relieved along the length to fit better with some cylinders not drilled out correctly. Locates the cylinder and head so the transfer ports dont go miss-matched.
 Fits all Lambrettas cylinders - small and large block and also work with shortened cylinders.