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. A bike that is too small will quickly grow uncomfortable, cause handling problems, and will frustrate you.
Be sure of the type of bicycle you want: Mountain bike, city bike or road bike. Alternately, you can try a kid’s model with 24″ wheels, as these can be great for adults as well. Good luck! 🙂 (the absolute most important large dimension in bike sizing), or other physical Author: Jeff-Senior Writer/CEO.
Mountain Bike Effective Top Tube and Reach. 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. ETT is a common measurement to look at when sizing a bike and is a good indicator of how long a bike will feel while you’re betterbasket.info: REI Staff.