Just purchased a Kasea 90 for my daughter after reading many posts on this site. I am interested in a twist throttle conversion if it is available. I did a lot of homework on this purchase due to her age. In my opinion, if you can find a distributor in your area for Kasea, BUY ONE!!! There is no comparison between the Kasea, and polaris,t-rex,etc.,etc. Kasea is by far superior in suspension, performance, safety, and is very user friendly for the smaller kids. Hats off to Kasea/Standard motors for a very well designed youth ATV. Thanks Raptor720 for your unbiased opinions.