I have a 4 year old boy and have been back and forth on getting him a sled. I need to sell myself on it and then move onto selling the wife on it (which will be the major challenge). There is a 2000 Z120 for sale locally. It has a 6.5 horse honda motor in it. Supposedly will go 20-25. Seems awfully fast for a 4 year old. I kind of wish it had the original motor in it for now. Anyway to govern these things down. The guy mentioned putting zip ties over hand grip on throttle side. I may go look at it as it is close by. What should I look for on these sleds. Any need to compression test a little 4 stroke. I see I can by a summer wheel kit for them. Do they have enough suspension to run around on in the summer. I have about 3 acres behind my home that is relatively smooth that would be ideal for winter and summer play. Last but not least, what are these things worth. The man wants 1600 BO. Seems to be about the going price for them from what I've seen. Just want to buy it fair enough that I can get most my money back out of it after my kids out grow it. Seems like that seems to be pretty common with these 120s. Thanks for any input