I have a piston kit that is .25mm over the stock bore size of 78.5mm. So, if you need to bore out your jug due to your engine smoking like a mosquito machine, then this kit will work for a jug that has not been bored from the factory specification of 78.5. This kit will make your piston increase in size to 78.75.
This kit will work on all Honda Rancher 350 motors from 200-2006 and is brand new, never installed (includes piston, rings, dowel to connect to connecting rod, and circlips). I had to go up a couple of sizes after I realized mine had been bored a couple of times before.
I would prefer to be contacted by phone: 662-507-5551