The chain is a 420 size. I don't know the number of links but it is probably less than 115-120 long.
Handlebars are 7/8" diameter. There are a couple of Pro-Taper and Renthal models that work. Just make sure you have at least 195-200mm of straight surface at the bar ends to fit everything on. Mixed results on bars so far. I am liking my Pro-Taper bars for the Kawasaki KLX/DRZ110. They are wide enough. I have even thought about shortening them a bit.
That should work, but there are much better options and of course, more $$ Make sure you have a good chain breaker on hand, too. It will need a 420 sized pin. I'll do some research tomorrow and see if I can find anything better to use for a replacement chain.