Shimano’s 13-Speed Evolution: New Dura-Ace R9300 Breaks Cover at La Vuelta
The cycling world is buzzing after a new iteration of Shimano's flagship road groupset, the Dura-Ace R9300, was spotted on professional team bikes at the start of La Vuelta a España. The most significant upgrade is the transition to a 13-speed drivetrain, matching competitors in the high-end market. Despite rumors of a fully wireless design, the prototypes maintain a semi-wireless setup, prioritizing reliability and battery life. Other visible changes include a redesigned shifter housing featuring an additional button, potentially for cycling computer integration or shifting shortcuts, marking a subtle but functional ergonomic improvement for pro riders.