what size bike for 8 year old

According to multiple sources, a 20-inch bike is generally the right size for an 8-year-old child. However, its important to keep in mind that children grow at different rates, so its best to take an updated measurement of their height and inseam and compare it to a kids bike size chart to confirm the correct size. Some other factors to consider when selecting the right size bike for your child include their riding ability and the size of the bikes components, such as child-size levers, cranks, saddles, and handlebars.