RE: Difference between 420 & 428 chain?
The question about chains has to do with the distance between roller centers. 420,428,520 are all different and do not interchange. I would call the manf or someone who makes sprockets (renthal, talon, etc) and see what they can do or what they have.
2008 Green RZR... stock.
"The cats in the bag, and the bags in the river."
"Cool like the underside of a pillow!"