Stems range in size from 50mm. Unfortunately there is no simple formula that can be used to determine optimum stem length. If you are comfortable with your current position on the bike you can simply replicate this measurement by adding the top tube measurement of the frame you are thinking of buying and the appropriate stem length. Stem Rise is measured in degrees. Stems from 0 to 10 degrees will produce a flatter, more race-like position.
Flat handlebars produce a lower, more flat-back riding position.
They are used for cross country racing, and general riding. If at any time you have questions, please feel free to E Mail our Tech Support Department.