Shimano 105 - Ride inspired. Riding pleasure for every cyclist. The Shimano 105 is the group for all riders who want to achieve their goals in daily training and enjoy long rides with friends on the weekends. The balance of the 105 offers reliable performance and riding pleasure for everyone. The new 105 ensures satisfaction, enjoyment, and riding fun with modern functionality, easy operation, and ergonomics. The new CS-R7000 cassette provides more options to tailor the drivetrain to personal preferences with a new 11-30 variant. Intended use: derailleur system. Weight: 284 g (11-28T), 304 g (11-30T), 320 g (11-32T), 269 g (12-25T) - High durability, same sprocket thickness as the 10-speed system - Wide "Rider Tuned" gear gradation, uninterrupted rhythm with the cadence control of 11-speed.