Re: looking for a 50cc atv for my 6yr. old
This is a judgement call on you. How big is he? Height and weight? Will he be racing or using it just for fun?
I bought my son the mini 50 because he just turned 5. He also has a little sister that will ride it this August when she turns 3. It is an amazing bike to learn on. It's only @110-120 pounds. The larger 50 and 90's are 220-240 pounds. If you plan on having more than one bike it would be a cheap investment ($1100) to see if he is really into it. Then once he's cool with it, give it to the younger ones and get him a 90cc ($1800-$2500) bike (unless he is gonna race, then get a 50cc). The larger 50's and 90's are typically the same chassis. The only difference is usually 16" tires on 7" rims, vs 19" tires on 8" rims. You can tune the 90 down for a beginner and then the sky is the limit has he gets older and gains more experience. But I can tell you that the mini 50 flies after just removing the two restrictors and even though it doesn't have a lot of suspension travel, handles great for flat tracks, fields, trails, hills and smaller jumps.
Basically the decision is up to you. And only YOU, KNOW your child and his/her abilities. Just be sure to get all the safety gear before he rides.