Originally Posted by
kudude
do any of these actually exist?
Yup. They even make a conversion kit for your MTB:
https://www.ktrakcycle.com/index.html
http://www.youtube.com/watch?v=-Dom5kfEhuw
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"When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
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