B. How to Size Your Bike
- With shoes on, measure from your crotch to the floor. This gives you your inseam length.
- Find the stand-over height on the bicycle sizing chart ("A" in the illustration below).
- Check the bicycle manufacturer's specification to determine the stand over height of the bicycle you are interested in purchasing.
- Allow adequate clearance between yourself and the frame of the bicycle to avoid injury. Note: If your crotch touches the frame, the bike is too big for you. Don’t even ride the bike around the block. A bike which you ride only on paved surfaces and never take off-road should give you a minimum standover height clearance of about one inch (2cm). A bike that you’ll ride on unpaved surfaces should give you a minimum of about three inches (7.5cm) of standover height clearance. And a bike that you’ll use off road should give you about four inches (10cm) or more of clearance.
Frame Size: Standover Height
12" XXSMALL 26.3"
14" XSMALL 27.4"
16" SMALL 28.6"
18" MEDIUM 29.9"
20" LARGE 31.7"
22" XLARGE 33.3"
(The geometry above is for a 2010 Diamondback Outlook bike)
The information provided here is intended to be used as a guide. Please consult a professional to insure a proper fit.