I'm getting ready to do a top end rebuild on my 86 Bayou 300 and I'm debating on whether it would be better to reuse the original piston with a new set of Kawasaki rings (assuming that everything is still within specs when I tear it apart) or go with an aftermarket Namura piston and rings. Cost wise, it's about the same either way. What would you do?

 

kawasaki rings cost as much as a namura piston and rings? you might want to find a new place to buy parts.

 

That piston is almost 30 years old! As long as it is apart I would swap that out as well. Don't forget to freshen the cylinder as well.

 

yeah, dont forget to ridge ream or those new rings will last about 10 milliseconds

 

The main reason I was asking is that I've been reading mixed reviews about the Namura pistons and any of the aftermarket snowmobile pistons I've seen look really cheap compared to the originals. I assume the ATV pistons are no better. I'd gladly replace the piston if I thought it would last longer than reusing the original one. I'll have to make that decision when I get it torn apart and see what the piston looks like.

 

look how long oem lasted... need i say more

 

Exactly. Seems Wiseco has forged pistons for your machine. I would start there if you can't find oem.