Originally Posted by Foot dragger
Hmmmmm, I wonder if a stock piston would last longer? Bob of Ironmandualsport tried a Thumper 570 kit,put about 25 hours on it and the piston cracked right down the middle in line with the wrist pin,way out in the middle of nowhere in Nevada. It went from running great to dead in about a mile. That was on a 07 525 though.
Its nice you caught this quick like.
Hope this is a fluke. I just installed a Wossner piston since I started burning oil w/ the OEM one.
I've got 200 miles on it so far and all is well. Lets hope it stays that way.
Send Wossner a picture and see what they have to say about it.