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General Road Bike Sizing:
Measure your inseam from crotch to ground standing in your cycling shoes, this is your minimum clearance. Then, select a road bike size with a standover measurement that is at least 1 inch less than your minimum clearance.

(the following measurements are for most typical road bikes with straight cross bars/top tubes
- please refer to the model-specific geometry prior to making a decision)

48cm = standover 27" fits most riders 4'11" to 5'3"
50cm = standover 28" fits most riders 5'3" to 5'4"
52cm = standover 29" fits most riders 5'4" to 5'6"
54cm = standover 30" fits most riders 5'7" to 5'9"
56cm = standover 31" fits most riders 5'9" to 5'11"
58cm = standover 32" fits most riders 5'11" to 6'1"
60cm = standover 32.5" fits most riders 6'1" to 6'3"
62cm = standover 33.5" fits most riders 6'3" to 6'4"
64cm = standover 34.5" fits most riders 6'4" and up

best way to pick size; get a frame you can clear the standover measurement by 1 inch
(these measurements are for most typical road bikes with straight cross bars/top tubes
- please refer to the model-specific geometry prior to making a decision)

For Example:

Joe's minimum clearance is 31 inches - fits the 52cm (29" standover) or 54cm (30" standover)
Traci's minimum clearance is 29 inches - she would choose a 48 or 50cm (27" to 28" standover)

For Mountain Bikes:

Please doublecheck your fit against the specific model geometry prior to ordering (the following is a rough guide for 26" wheel bikes. Bikes with 29" wheels have a higher standover height so most riders fit one size smaller than their 26" wheel bike

Best way to pick your size - choose the one you can clear the top tube by at least 1.5 inches
15 inch fits most 5'1" to 5'4" (standover clearance = 27.5")
17 inch fits up to 5'8" (standover clearance = 29")
19 inch fits up to 6'0" (standover clearance = 30.5")
20.5 inch fits up to 6'2 (standover clearance = 32")
22 inch fits up to 6'5" (standover clearance = 33.5")
Standover clearance is measured at the center of the bike from the floor to the top of the frame

Please Doublecheck your fit against the specific model geometry prior to ordering

Size down if you have a short upper body/arms or for more aggressive riding style or lower handlebars
Size up if you have long upper body/arms or if you simply prefer a larger bike in general (and don't need the straddle clearance) or you desire higher handlebars

These are general guidelines
Please Doublecheck your fit against the specific model geometry prior to ordering. Your Personal preferences should determine your size choice - it is up to you.
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