SW-R610

Brand: Shimano

Entry-level Di2 sprint switch, sold as a pair, which Shimano lists as mountable « anywhere » on the bar. It is the lightest of the Di2 satellites at 5.8 g per pair. It uses neither an E-Tube SD50 nor an SD300 wire: it plugs into the dedicated « remote sprinter shifter » port of 11-speed levers, which makes it unusable on a 12-speed system, even with an adapter.