MTB - what size?

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Proto

Legendary Member
Daughter is about to buy a hard tail mountain bike, probably a Trek Pro Caliber. She’s 172cm tall. Does she buy a small or medium?

If it helps, her road bike is 52cm Cervelo R5, slammed 12cm stem. Saddle height about 720mm, 170mm cranks.

Thanks
 
I'm around 170cm, and can take either a small or medium frame, and adjust to fit. I'm guessing her leg length would be 2 or 3 inches more, as females generally have longer legs in relation to height. A medium therefore might be the better option, can easily be resold as well.
 

flake99please

We all scream for ice cream
Location
Edinburgh
I would go with the medium. You could always pick up a shorter stem if she feels she is ‘reaching’ a little for the handlebars. I did that with a large framed trek, and I’m 178cm.
 
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