Shimano 105 - Ride InspiredRiding pleasure for every rider. The Shimano 105 is the group for all riders who achieve their goals in daily training and enjoy long rides on weekends and with friends. The balance of the 105 offers riding pleasure for everyone with its proven, reliable performance. The new 105 delivers satisfaction, enjoyment and riding fun with modern functionality, ease of use and ergonomics.The new CS-R7000 cassette gives a new 11-30 variant more options to tailor the drivetrain to personal preferences. Intended use: derailleur gears. Weight: 284 g (11-28Z), 304 g (11-30Z), 320 g (11-32Z), 269 g (12-25Z). High durability, same pinion thickness as the 10-speed system. Wide "Rider Tuned" gear graduation, undisturbed rhythm with the cadence control of 11-speed. Gradation 12-25: 12-13-14-15-16-17-18-19-21-23-25. type: cassette sprocket.