He's 4-10 & 75lbs (skinny butt) He started on a 50 & has had a PW 80 for 3 years. We just got it out for the Summer & he's really outgrown it. He also has a Yami Bravo 250 snowmobile. So he has about 5 years of experience on bikes & sleds. I know he's ready for a step up & would rather get a bike with a manual clutch vs the auto's. I'm partial to Yami's but in his case don't want to let that influence the decision. Definitely open to 2S or 4S and the year doesn't matter. One of those tough decisions where I want enough bike to keep him happy for a few years but not too much bike. I'd like to hear what you've been getting your similar aged kids. Thanks for any replies.