Mini bike building is a growing community. Just take a look at the Redditor who made a mini bike using just Harbor Freight tools. Thene there's the Mega Moto 212, which has been an industry mainstay.
If your kid is a motorbike enthusiast, then you will probably want to get him/her a safe and powerful bike. With so many models in the industry to choose from, you may end up getting the wrong bike.
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