electronic gear-shifting system
... that an electronic gear-shifting system for bicycles can shift faster than a traditional mechanical system and calibrate itself to minimize maintenance?
... that an <b id="mwB9s"><a href="./Electronic_gear-shifting_system" id="mwB9w" rel="mw:WikiLink" title="Electronic gear-shifting system">electronic gear-shifting system</a></b> for <a href="./Bicycle" id="mwB90" rel="mw:WikiLink" title="Bicycle">bicycles</a> can shift faster than a traditional mechanical system and calibrate itself to minimize maintenance?