And one is likely to be a better fit for you than the other.īike Fitting is the process of fine tuning the position of the bike - body contact points in relation to each other for your riding comfort, efficiency and performance.įEET TO PEDAL - BUTT TO SADDLE - HAND TO BARSĪ bike the wrong size or shape does not allow for an optimal fit position to be established.
So two bikes with the same frame size but a different shape will feel different to ride. Some have a lowered front end for more aggressive aerodynamics (and looks), but may be a pain in the neck to ride. Some are "square", some are high, but short in length. In addition to the frame size is the frame shape, or geometry. More important than the seat tube length is the top tube length, as this has a big influence on the seat to handlebar distance, which is a major factor in riding position and comfort. Or it might be expressed as a generic Small, Medium, Large, leaving the actual size even more open to interpretation, and difficult to compare brands or models. Manufacturers differ in how this is measured, so two or three bikes from different brands, each with the same published frame size may actually be significantly different in actual size. Frame size is commonly an expression of the seat tube length. There is more to bike sizing than having enough stand over clearance, and there is more to bike sizing than fixating on a frame size. A bike of an appropriate size is a precursor to establishing a good bike fit. Bike Sizing is intended to assist you select a bike that has a frame size and shape that is appropriate for your anatomical proportions, riding style, and physical condition - including flexibility and any relevant injuries.
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