Mountain Bikes tend to use the T-Shirt sizing of S, M, L etc. or will have the seat tube measurement in INCHES. Why mountain bikes are inches and road bikes are CM who knows, but the part of the frame being measured is the same.

As a rule of thumb if you can identify your size as Medium on one brand, you should use that as a starting point on another brand too.

If you already own a medium mountain bike for example and are comfortable with the sizing, start there.

What is your height?Your suggested bicycle size
Feet/InchesCentimetresSuggested Size
4’10” – 5’2″148cm – 158cmX-Small (14-15″)
5’2″ – 5’6″148cm – 158cmSmall (15.5-17″)
5’6″ – 5’10”158cm – 168cmMedium (17.5-18″)
5’10” – 6’1″168cm – 178cmLarge (18.5-20″)
6’1″ – 6’4″185cm – 193cmX-Large (20.5-22″)
6’4″ – 6’6″193cm – 198cmXX-Large (22.5″+)

If you need any more advice on bike sizing for mountain bikes please contact us and we can help you make the right choice.