DEORE XT CS-M770 CASSETTE.
Shimano's latest creation is the high-end CS cog cassette, the M770, with a 9-speed close-ratio gear carrier, gives a wider range of gear selection with a lower bottom-end. The crowns are mounted on the hub headstock via a lightweight aluminum alloy carrier supporting the crowns closer to their circumference. The weight of the cogs is significantly reduced, while rigidity is increased, which improves gear shifting.
The special 9-speed HG crankset design ensures fast and reliable gear changes - HyperGlide.
Compared to the XT cassette mod. CS-M760 weight has been reduced by about 8g for the 11-32 model
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