Some of our bikes don’t even have indexed shifters. The only derailleur that required extra service was the Shimano Rapidfire shift levers on my mtn bike, and that was just a clean and re-lubricate.

It’s cleaner. Those shift cables are nicely tucked under bar tape, away from the elements, and won’t get caught on people’s bikes, tree branches, or a poorly placed course-marking pole. [Update: ...

Stefan Schumacher of Germany speeds down Ombarde Pass using Shimano's Di2 electronic shifting system during the 2008 Tour De France. Photo: Christophe Ena/AP Japanese parts manufacturer Shimano is ...

Switches for 12-speed Di2 components (SW-RX801) cost about $130 for a pair (depending on cable length). Previous-generation 11-speed and 10-speed Di2 systems also have wired satellite switch ...