Shimano’s electronic groupsets give you crisp, precise gear shifts and are now commonplace on the bikes of professional cyclists. Shimano Di2 is also a popular option for riders buying a new bike or ...
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 ...