While XTR has always been the group for light race performance at the cost of durability, XT has always been the high-end group that will durably do just about everything XTR will do but a little heavier and cheaper. The Deore XT CS-M770 cassette is no exception with long-lasting chrome plated steel cogs precision designed with Hyperglide shift ramps for crisp, fast shifting. Another smart advancement is overshift pins on the back of the largest cog preventing the chain from becoming fully embedded in the spoke/hub/cassette juncture and causing serious wheel damage. On the 11-32 tooth version, a four arm alloy carrier holds the last 5 cogs together to save weight and increase stiffness. On the 11-34 tooth version, a five arm carrier holds the last 6 cogs together. Ideally used with a Shimano super narrow HG 9-speed chain.
- 11-32 (11, 12, 14, 16, 18, 21, 24, 28, 32; 261 grams)
- 11-34 (11, 13, 15, 17, 20, 23, 26, 30, 34; 297 grams)
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
Ordered by Most Relevant First
5 stars
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1 stars
Restored an older MTB
Brought my old 9 speed bike back to life. People still don't understand my mid 2000s MTB at the trail head. Then their PO when they can't get away on the trail.
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Reviewed 6/2/2019
by Steve K
Glenwood springs, Colorado
Perfect replacement cassette.
Very light, quiet, and shifts beautifully.
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Reviewed 3/16/2010
by Tommy
Competitive Racer
Portland
Value Rating
Overall Rating
6 of 9 customers found this review helpful.
Perfect for training or racing
Mt XT cassette has performed perfectly all winter through muddy training rides on my mountain bike. It's performing so well I've continued with it into the racing season. Perfect shift every time.
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Reviewed 5/17/2019
by UTcyclist
Cycling Enthusiast
Ogden, UT
Great cassette for my new indoor trainer.
Using the cassette on my new indoor trainer with my mountain bike. Working perfectly, smooth shifts, no skipping.
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Reviewed 5/17/2019
by UTcyclist
Cycling Enthusiast
Ogden, UT
Great new cassette for my new indoor trainer.
Installed the cassette on a new direct drive indoor trainer for use with my mtn bike. Working perfectly with smooth shifts, no skipping.
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Reviewed 3/28/2019
by Joef777
Cycling Enthusiast
New England
Far superior to the stock 9sp cassette that came on the bike
Totally different design than the pinned 9sp cassette that came on my wifes Giant. The stock unit was junk and came apart on the trail, it was a low end Shimano cassette. the CS-M770 uses a one piece body that interfaces with the freehub in one big piece and meets the standards I expect for upper line Shimano gear. A good purchase and a great upgrade.
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