Disc brakes, 34t cassette, plus the best bits of Dura-Ace Shimano’s new Ultegra groupset has now been officially announced. Dubbed R8000 for the mechanical version and R8070 for the electronic Di2 ...
Ambos son los grupos de cambio electrónicos de gama media-alta de Shimano para ciclismo de carretera. Y comparten buena parte de tecnología y diseño de componentes. Pero hay diferencias y pequeños ...
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