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Dura-Ace moves to the next generation. Tested in competition and taken to victory by pro riders in all conditions, including the 2012 Tour de France Team Sky. Cutting edge technology for the ultimate in control and confidence.
Rider-tuned means Dura-Ace works the way you want it. The new 11-speed cassettes are available in a range of sizes including a wide-range 11-28 option - one cassette to use all year round. Smooth, fast shifting guaranteed.
For more information on how to keep your bike running smoothly, click here to see PBK's expert advice on taking care of your chains and cassettes.
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This former cassette (since Shimano is changing its cassette with the july 2016 announced groupset) was the most useless and dangerous piece of equipment ever coming out of Shimano. the carbon core (17-19 or 18-19) resonated and flexed under load. Besides the creaking, the cogs leaned under load. Since the 11 speed chain was too wide (over 5.6mm) it touched by default the adjacent cogs- which Shimano admitted in announcements as self wearing grinding. The net effect was a chain too large, a cassette leaning it and dropping it under load. Carbon core also breaks under load- or just fails and fatigues, and serious riders would know that. 39-17 36-18 36-19 and even 52/53-17 (27-35 kmh /hr) is where this cassette fails. Ride at 90RPM 39-17 the effect is less visible. The core will also break under load- version depending, as Shimano doubled the carbon retaining pins), months versus weeks. Most times it will under-perform and just creak, drop the chain and scaring the rider. Internet searches will reveal these 9000 cassette issues.. Solution: Campy cassette or, if Shimano/SRAM, SRAM cassette (any)- esp hyper glide, with the narrower, and better built Campy and Shimano chains. So bank on 300$ to solve the problem, but it is solved. July 2016 9100 DA, major changes in cassette. Will see if they retained the same approach for the new cassette.Report this review
Since the creation and release of the 9000 / carbon core series, the DA and Ultegra with carbon core have the following problems: - Carbon core flexes and breaks - google for pics - Disks on the carbon core bend sideways under torsion - Chain is too wide at 5.8 mm and touches adjacent cogs, esp in the 17-19t zone One gets creaking, dings, chain shifts and snaps, and, in various cases, cassette carbon core cracks around the pins. Shimano admitted to the chain issue (google its communique) and alleged that with wear chain will make room for itself. However the rider will be hurt long before that happened. Shimano also admitted to the carbon crack by doubling the retaining pins- takes twice as long to crack, so months instead of weeks. the optional solutions are Campy chain with Shimano- does not change the disks flexing under load. Finally, last solution was SRAM 1190 with Campy or Red 22 chain, and problem gone. Worse design ever imaginable. 3 years now and Shimano's solution is to push 105 cassettes, as no serious rider rides a DA or Ultegra.Report this review