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What size?(3 posts)

What size?S-U-B
Apr 21, 2002 7:31 PM
trying to buy a MTB as a gift for my father in law, his current ride is to big. I can't see a size on his current bike, is there a way to measure? it is a specialized, probably ten years old. He is about 5'8". Thanks for your any help.

re: What size?guido
Apr 21, 2002 8:56 PM
Frame size on a bike with a horizontal top tube would be measured along the seat tube from the center of the BB spindle to the top of the top tube. For someone 5'8" that would be very close to 54cm.

Mountainbikes all have sloping top tubes, therefore much shorter seat tubes, so probably the best way to match frame sizes would be to measure from the BB spindle to the top of the saddle, and from the nose of the saddle to the handlebars, noting how far lower the bars are from the seat. Those are the critical dimensions for proper fit and comfort: seat height, and reach to handlebars.

Then find some MTB sizes that can be dialed in to work with those measurements. A good bike shop would be glad to help you.
re: Mediumcyclopathic
Apr 22, 2002 3:23 AM
it is probably btw 16-18". Since most companies only offer Small, Medium, Large (sometimes XL) this would be Medium. There's a little chance he might need Small (very short legs or very short torso) but I doubt. Go with the shop which would do prof fitting, swap stems if need good luck