Shimano XT M770 9 Speed MTB Cassette
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Shimano XT M770 9 Speed MTB Cassette
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Code: CSM770
Shimano XT M770 9 Speed mountain bike cassette
  • High performance 9-speed cassette
  • Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load
  • Close ratio gearing allows a more efficient use of energy through finer cadence control
  • Six largest sprockets are mounted on a lightweight alloy carrier to reduce weight and increase rigidity
  • Double rivets on the 34T sprocket to the alloy spider for increased rigidity
  • Sprockets are cut away and drilled to further reduce weight without reducing rigidity
  • Chrome-plated finish offers hard wearing resistance to corrosion
  • Chrome-plated steel cassette lockring
  • For Super Narrow 9-speed HG chains
  • Weight 256 g for 11 - 32T


A solid, dependable cassette that's built with performance in mind. Definitely worth upgrading to if its a part that needs replacing. Easy to fit - you'll need a chain whip, shimano tool and a big spanner - but once on its not going to worry you. Good reliable shifting and nice and light. I fit XT on all my mtb's as its kit that just works, not the cheapest but too cheap is a false economy and you're forever fixing/replacing stuff which is costly and worse: less time actually riding!
Being a bit of a Luddite, I have refused to be taken in by all these tapered headsets, through axles, big wheels and bottom brackets. As for gearing, 9 at the back and 3 at the front suits me fine for off roading. This cassette is one of shimano's finest, solid precise shifting and long lasting. I brought 2 before stocks run low and prices increase. LX equivalent has significantly lower build quality.
Light weight and working smooth..
Nice, no more skipping chains under stress, first XT cassette I have had and it is much lighter with it's alloy carrier than my previous Deore one I was replacing. Will be using these from now on.
Great value cassette that lasts well and shifts cleanly.
Very light and Alu spider should save my Hope freehub. Smooth shifting - goes without saying.
Great product! Snappy shifting, great price, and shipped fast. Everything I needed!
You just can't go wrong with XT, long lasting and super light
I don't think there is a better compromise between strength, weight and price than an XT cassette. Everything else seems either a little too heavy or too expensive, especially if there is more than one bike in the garage to keep up.
Sooooo smooth and quiet. Switched from a hg50 to this xt cassette and you can feel and see the difference. Having a great transmission set makes the ride so enjoyable. Definitely the best prices out there, great service and very fast delivery to California.