How to Fit a Bike: 3 Steps to a Good Fit
1. Check the Bicycle Frame Size
Stand over the bike and ensure there is clearance between you and the top tube:
- Road bikes: 1” clearance
- Mountain bikes: 3-5”
Size Chart: Typical Bike Fits for Children
- Under 6 years*: 12” – 16” wheel
- 6 to 9 years*: 20” wheel
- 9 to 11 years: 24” wheel
- 12 and older: 26” or larger wheel
*Children age 6 and under need close supervision – even on quiet neighborhood streets.
2. Adjust the Bicycle Seat Height
The rider should be able to sit on the seat and balance the bicycle with both feet just touching the ground. The bicycle should not lean to one side.
While seated, the rider’s leg should be slightly bent when the pedal is at its lowest rotation. Seats that are adjusted too low can cause knee pain. Seats set too high can cause hamstring pain.
The seat may need to be adjusted to find the right fit. If the seat is in the lowest position and the rider cannot touch both feet to the ground, the bicycle is too large.
When buying a bike for a child, avoid buying a large bicycle for your child to “grow into.”
3. Check Positioning of Your Bicycle Handlebars
Position standard handlebars above the center bar, with grips at or above the seat level.
Position dropped handlebars (below the center bar) so the upper part of the bar is level with, or slightly below, the seat and tilted down.
Adjust your handlebars so the 70% of your weight is on the seat, and 30% of your weight is on the handlebars.