Features Shimano Dura Ace CS-R9200 CassetteSpeed was the mainspring in the development of this next generation road bike 12 speed groupset. Several years of research produced those innovations that make the Shimano Dura Ace R9200 even faster. Shimano Dura Ace CS-R9200 Cassette - 12-speed Shimano Dura Ace R9200 – The Science of SpeedSpeed was the mainspring in the development of this next generation road bike 12 speed groupset. Several years of research produced those innovations that make the Shimano Dura Ace R9200 even faster. Every component has been reviewed, refined and optimized to allow for those decisive seconds of advantage, whether in a breakaway from the peloton or in the final sprint on the Champs-Élysées.In the Di2 electronic version, the Dura Ace relies on wireless technology where it counts to make shifting even faster and more reliable. Smooth shifting is also the goal of the Hyperglide system, already known in the MTB segment, which is designed to bring out the maximum performance and potential of each rider. Shimano Dura Ace CS-R9200-12 CassetteHyperglide technology has already set the standard in the off-road sector, where it has been able to convince with its smooth shifting processes in both directions across the entire gear range. With the Shimano Dura Ace CS-R9200 cassette, this concept also comes to road bikes to ensure worry-free up and down shifting, whether it's putting more power up the climbs or sprinting to the starting line. goal.While the larger teeth ensure maximum efficiency, shifting to 12 gears is done without an increase in weight. And the 12-speed cassette is even compatible with previous Shimano 11-speed freehubs. This makes the CS-R9200 the cassette of choice for road bikes. pine nut ratio

• 11-12-13-14-15-16-17-19-21-24-27-30 teeth

 Hyperglide Conventional Hyperglide technology provides smooth gear changes thanks to small shift ramps that move the chain to the next largest sprocket. The Hyperglide takes over this function, but also applies it in the opposite direction to prevent the chain from falling when descending. The result is a smooth, consistent ride in both directions, with no bumps and no loss of cadence. Material:sprockets (11-30 teeth): 5x titanium, 7x steel (nickel plated)spider: aluminum (anodized) Compatibility:rear derailleur: RD-R9250, RD-R8150chain: CN-M9100, CN-M8100, CN-M7100, CN-M6100 Weight (manufacturer data):approx. 223 grams (11-30 teeth)