How to fit a mountain bike.
Having a mountain bike that fits you well is important not only for comfort but also for helping to prevent injuries. A bike that's the wrong size or poorly adjusted increases your chance of developing an overuse injury. The best way to adjust your bike so that it correctly fits your body is to follow these guidelines with the assistance of someone who understands the relevant anatomy and has experience working with cyclists. It is very difficult to perform some of the measurements on yourself. (These guidelines also apply to fitting a road bike, except where indicated.).
Kronisch
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San Jose State University, San Jose, CA, 95192, USA.