KZ550 D piston size

My KZ550 D motor has 58mm pistons. There is nothing inscribed on the pistons. Is this the standard size? I need to buy a ringset for 1 piston, because I broke it while lubricating it. It was sticky. Kawasaki SA can order them for me, but need the propper size.

EtienneS wrote:

My KZ550 D motor has 58mm pistons. There is nothing inscribed on the pistons. Is this the standard size? I need to buy a ringset for 1 piston, because I broke it while lubricating it. It was sticky. Kawasaki SA can order them for me, but need the propper size.

Yes, 58.0 mm was the standard size.

Robert