I have the bike you need in the classified section. It is a 2003 Polini X3 Works with a fully automatic three shoe spring clutch. My son is 52 1/2" tall, and this bike fits him perfect. You can tone the clutch down, or make it hyper very easily. That's the beauty of this bike, it can be a tame kitten or a terror on two wheels. It comes with a ton of new and very lightly used spare parts, and will include a two shoe spring clutch, which will engage much lighter, for the beginner rider. This bike is q-tip clean, and completely ready to ride. From the cases up, it's all new, and from the cases down, it has about an hour on it. It also has Michelin Starcross tires and Pro Taper bars and grips. I can e-mail pictures if you are interested. Thanks.