Does anyone have a good guess what size this Miyata is? '83 or '84 Ridge Runner. I have a hard time determining what will fit me on non-compact geometry MTB's. The seller says it's a 18 inch medium. If it is, 18 inches would be fine it it were a compact frame. The smallest road frame I can ride is 54cm. I can see the TT length is fine but on this bike I wouldn't want a foot of seatpost sticking up.
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