Mountain Bike Size Chart. Effective top tube (ETT) describes the horizontal distance between the head tube and the seat tube, regardless of whether you have a straight top tube or one that slopes down. Mountain Bike Sizing Guide When buying a bike, the fit is the most important factor when it comes to comfort—and the more comfortable you are, the more likely you are to keep riding.
Effective top tube (ETT) describes the horizontal distance between the head tube and the seat tube, regardless of whether you have a straight top tube or one that slopes down. Need to know what size Cube bike is for me? Have someone measure from the floor to the spine of the book.
So, make sure you look at a tire size chart and try a full-suspension mountain bike for size before buying.
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XC, DH, trail—our mountain bikes cover every facet of riding. Travel back to the beginning of full-suspension mountain bikes. Mountain bikes are generally measured in frame size (inches), which is the distance from the center of the crank to the top of the frame at the seat tube.