Hi Everyone I tore down the motor today on my kawasaki. I found the number cylinder piston had a crack in the middle of the piston. I still trying to find out if I can hone the cylinders on these skis. My mechanic recommended replacing all four pistons with Weisco pistons and rings. We are planning on replacing rod bearing and main bearings,timing chain,oil filter and new gaskets of course. The theory is that the motor will be like new then. I plan on keeping the ski since I like it. I just need to find out about honing the cylinders. I don't know if this is the best plan. My buddy said the pistons in my stock kawasaki where not the best pistons to use. He believes that Weisco pistons are better for the ski and it was my suggestion to replace the rod and main bearings,timing chain as well. Not sure if there is anything else we should check out. The motor is completely torn down now. We had to do a complete tear down to get to the one piston. I think it would be stupid to do only one piston. But the same question keeps coming up. Does the block have to get the cylinder wall refinished or can I just install new pistons and rings. I know Kawasaki are bit different from other ski. Maybe someone with motorcycle knowledge will know. Any information is helpful. Please help me out.