DG like with road bikes it's not that easy but mountain bike sizing is generally but not always as it depend on your reach as well. You got to be able to reach the brakes comfortably while pulled off the back of the bike...
so 5'2" - 5'6" small (14-15)
5'6" - 5'10" Medium (16 - 18)
5'10" to 6' large (18-19)
6' - 6'3" Xlarge (19 - 21)
and over 6'3" whatever you can get.
And of course there is alot of lap over.
I had two medium bikes. The first was the Specialized FSR Stumpjumer. The second is my current Santa Cruz Superlight. Both are 17" (I'm 5'8"). The FSR was a huge bike compared to my Superlight because of the head tube angle, fork (5" vs. 4") and reach. My Santa Cruz is actually a little too small. I apparently am a "inbetweener". This should give you some indication what to look for.
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Private docent led mountain bike rides through Limestone Canyon. Go to
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Last edited by Pamestique; 01-04-08 at 03:54 PM.