Thread: Correct Mountain Bike Sizing
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Old 03-02-09 | 12:49 PM
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kmart
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Joined: Sep 2006
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From: Bay Area, Sunny Cali

Bikes: '05 Felt F55, Schwinn Prologue road bike, '86 Centurion DS Iron Man, Sette Flite AM MTB

Originally Posted by NormanF
Subtract 12 cm from your road bike size to get the MTB size in cm and then convert that to inches. My road bike is 55 cm. Subtract 12 = 43 cm. Its 17 inches. My MTB size is 18" and I ride a 17.5" frame which is the next size. That would be a medium with a 32" inch inseam.
That works for me. I ride a 56 cm road and 17.5" MTB, which fits me great.
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