I think he meant "for" the HPE. And Maksor has them in stock, so I think that any dealer should be able to get a cylinder/piston/rings set. If your cylinder is OK, then make sure you get the right piston- there are four sizes of standard piston that are closely fit to 4 sizes of cylinder, at least on the older (2009) 492cc MASTER engine. Mine had a "C" stamped on the top of the piston, indicating the third size up. You won't be able to bore the cylinder since it's just coated aluminum, but a *very* light honing with a ball hone will help the rings seat faster.
If you had a piston land crack, then it's likely that you had suffered from detonation in the past- early pistons were very prone to detonation damage- cracks between the top and middle rings. So when you put everything together again, use an extra mm of bottom gasket to lower the compression a bit, and always use the highest octane fuel you can find to minimize detonation.
Last edited by Squeazel on Tue Sep 21, 2021 11:54 am; edited 2 times in total