Hi Guys, I am looking at two ATV's for my 7 year old, Unison 90cc 4-stroke, (I can't find in the Web a recent web page to buy parts for it. Is Unison company still making atv's?; also not much of reviews good or bads for them)

The other quad is an Artic cat 90 2 stroke; My question on this one is, how much of a hassle will be rejetting the atv to start in altitude, I live in phoenix, but would like to ride in the flagstaff area, which has more altitude than phoenix.

thanks for your help

Titanesso

 

IMO, Jetting is usually not a issue untill a machine (motor) is highly modified.
Stock machines are usually jetted fat enough to ride at most any elevation.

 

Not sure about the Unison, they seemed like a pretty good unit, and I believe Kolpin was selling rebadged Unisons not that long ago. As far as rejetting, it usually isn't that big of a deal, if it even needs to be done.