|Category||Components > Freewheels > 11 Speed Cassettes|
The Shimano Dura-Ace CS-7900 cassette provides you with a wealth of gearing options unlike any previous generation of Dura-Ace. You get an unprecedented 8 different ratios to choose from -- 11-21, 11-23, 11-25, 11-27, 11-28, 12-23, 12-25, and 12-27. The low 6 cogs are steel, and the high 4 cogs are made from titanium. Compared to the CS-7800 cassette, you get a weight savings of 10g (e.g. the 11-23 weighs 166g).
The backbone of the Dura-Ace CS-7900 cassette is its new aluminum carrier unit. Not only is it lighter than the CS-7800's, but it offers a measurable increase in rigidity for improved power transfer when you're putting the hammer down. In addition, Shimano did some re-engineering to the cog teeth profiles. They're fine-tuned to mate to the Dura-Ace CN-7900 chain -- giving you superior shifting on both up-shifts and down-shifts. You'll also experience added drivetrain efficiency since the inner plates of the CN-7900 precisely fit the cog teeth of the CS-7900 cassette. Lighter, stiffer, crisper -- you get improvements all around.
Shimano Dura-Ace CS-7900 Bicycle Cassette - 10 Speed
Computer designed tooth configuration with contoured shift gates
Allow for smooth shifting, even when under a heavy load
Close ratio gearing for more efficient energy use through improved cadence control
Largest sprockets are mounted onto a lightweight alloy carrier to enhance rigidity and reduce weight
Nickel-plated finish offers hard wearing resistance to corrosion
Includes alloy cassette lock ring.
For Super Narrow 10-speed HG chains
Sizes available from Manufacturer: 11-21T, 11-23T, 11-25T, 11-27T, 11-28T, 12-23T, 12-25T, 12-27T
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