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Shimano M770 XT 9 Speed Cassette

Item #: CS306B00
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USD$49.99 55% off USD$110.00 msrp
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Shimano Deore XT M770 Cassette features "Pro Level" technology at an accessible price.  The alloy carrier keeps the weight down and varying tooth profiles provide smooth shifting.  One unique feature on XT, pins behind the largest cog, help prevent the chain from damaging spokes.
  • Weight(claimed): 297 g
  • Compatible with 9 speed drivetrains
  • Fits all Shimano and Shimano compatible 8/9sp cassette bodies
  • Spider arm design
  • Aluminum lock ring
  • 34t version uses a 5 arm spider
  • 32t version uses a 4 arm spider
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REVIEW SNAPSHOT®

by PowerReviews
Shimano M770 XT 9 Speed Cassette
 
4.4

(based on 50 reviews)

Ratings Distribution

  • 5 Stars

     

    (30)

  • 4 Stars

     

    (16)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

95%

of respondents would recommend this to a friend.

Pros

  • Precise shifting (36)
  • Easy to install (33)
  • Lightweight (28)
  • Durable (27)
  • Enhances pedaling efficiency (19)

Cons

    Best Uses

    • Mountain biking (37)
    • Road biking (4)
      • Reviewer Profile:
      • Avid cyclist (22), Casual/ recreational (12), Competitive cyclist (4)
      • Was this a gift?:
      • No (41)

    Most Liked Positive Review

     

    Smooth operator

    I upgraded from HG series that came on my Specialized Stumjumper FSR Comp. That one lasted me a couple of YEARS! I ride at LEAST 3-4 times weekly, AND race Kenda Cup,...Read complete review

    I upgraded from HG series that came on my Specialized Stumjumper FSR Comp. That one lasted me a couple of YEARS! I ride at LEAST 3-4 times weekly, AND race Kenda Cup, & other x/c races. I wanted to save weight, and retain the smooth shifting I have had since I bought the bike. I got 11-34t w/5 splines. No durabilty problems. I weigh 145lbs. I don't know why people say they bend these things. I think they probably recklessly shift under load like they're riding a motorcycle or something. I don't think you are supposed to do that on a bike. That's just my opinion.

    VS

    Most Liked Negative Review

     

    Great cassette but needed work ? ?

    Had Jenson install when purchased and immediately noticed a faint spoke sound. After a few rides i had thought i had a few loose spokes but every time i checked them i found nothing....Read complete review

    Had Jenson install when purchased and immediately noticed a faint spoke sound. After a few rides i had thought i had a few loose spokes but every time i checked them i found nothing. As the sound grew louder i had finally found the problem, shimano had designed the big sprocket with pins integrated as to protect from "chain damage to spokes" but these little pins had hit all spokes slightly damaging them. The sprocket had to have the pins lightly ground down with a dremell to clearance the spokes. I would have given it 5 stars but due to the fact that i was replacing the same exact cassette with a new one and the old one did not have the pins and now i had to modify a new cassette, i knocked it to 3 stars. Had jenson caught this on install i would had just bought something else and saved myself some time and spoke damage. If u are thinking the freewheel hub had play it was replaced weeks earlier so that is not the culprit. BTW who has had a chain jump over the large sprocket on the cassette ? Every time my chain derails i am flying and my chain falls to the smallest cog!

    Reviewed by 50 customers

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    Displaying reviews 1-10

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    4.0

    Old Reliable

    By Ricky Racer

    from Collegeville, PA

    About Me Avid Cyclist

    Verified Buyer

    Pros

    • Durable
    • Easy To Install
    • Enhances Pedaling Efficiency
    • Lightweight
    • Precise Shifting

    Cons

    • None

    Best Uses

    • Commuting
    • Mountain Biking
    • Road Biking

    Comments about Shimano M770 XT 9 Speed Cassette:

    I have been using Shimano XTR and XT cassettes for many years and in my opinion you can't beat XT's performance for the dollar. I think the XT line up is the best value in mountain cassettes if you ride Shimano drive trains.

    • Was this a gift?:
    • No
     
    5.0

    Great value and performance

    By Rune

    from Berkeley, CA

    About Me Casual/ Recreational

    Verified Reviewer

    Pros

    • Easy To Install
    • Lightweight
    • Precise Shifting

    Cons

      Best Uses

      • Mountain Biking

      Comments about Shimano M770 XT 9 Speed Cassette:

      Got this cassette to aid in my upgrade from an old 7-speed system (Deore DX) to 9-speed. I'm using this cassette with XT 770 shifters and the setup is incredibly smooth. Seems to work great with the SRAM PC-971 chain. Haven't used it long enough to comment on durability yet.

      • Was this a gift?:
      • No
       
      4.0

      Happy to find 9 speed parts

      By Chris

      from Baltimore, MD

      About Me Avid Cyclist

      Verified Reviewer

      Pros

      • Durable
      • Easy To Install
      • Precise Shifting

      Cons

      • None

      Best Uses

      • Mountain Biking

      Comments about Shimano M770 XT 9 Speed Cassette:

      Happy they still have some 9 speed part out there. Just not interested in a total rebuild so purchased a few cassettes and now Im good for a while. Thanks for the great service an prices Jenson

      • Was this a gift?:
      • No
       
      4.0

      Great shifting and LIGHT!

      By mcseforsale

      from The ATL

      About Me Avid Cyclist

      Verified Reviewer

      Pros

      • Easy To Install
      • Enhances Pedaling Efficiency
      • Lightweight
      • Precise Shifting

      Cons

        Best Uses

        • Mountain Biking

        Comments about Shimano M770 XT 9 Speed Cassette:

        I've been exclusively using Sram cassettes since the 90s but I noticed that they were severly marring the freehub body of my American Classic hub. Since the Shimano didn't have that design limitation, I decided to try it. It's definitely lighter than the equivalent Sram, and it shifts about the same. However, the Shimano is about 14 grams lighter. It does, however, have a more tinney sound when shifting leading me to believe that the cogs are thinner. I was getting about 3-4 chains worth of wear on the PG990/980s and I'm hoping this one lasts as long.

        • Was this a gift?:
        • No
         
        5.0

        Great cassette

        By Vesco

        from Phoenix, AZ

        About Me Avid Cyclist

        Verified Reviewer

        Pros

        • Durable

        Cons

          Best Uses

          • Mountain Biking

          Comments about Shimano M770 XT 9 Speed Cassette:

          Been running this for almost 2 years. Haven't had any problems.

          • Was this a gift?:
          • No
           
          5.0

          Solid for Miles and Miles

          By PBJoe

          from New Jersey

          About Me Avid Cyclist

          Verified Reviewer

          Pros

          • Durable
          • Easy To Install
          • Lightweight
          • Precise Shifting

          Cons

            Best Uses

            • Mountain Biking

            Comments about Shimano M770 XT 9 Speed Cassette:

            It came time to replace the cassette and chain on my hardtail. I prefer the 11-34T gearing as I am used to it from the previous SRAM Cassette.

            I know with a new cassette and chain the shifting feel will always feel significantly better, so that was not a major surprise to have that improvement. The noise though (both while shifting and just when pedaling) has improved as well.

            Parts went on very easily and with a slight amount of tuning, i was back in the saddle.

            Very happy with the purchase.

            • Was this a gift?:
            • No
             
            5.0

            Lightweight and smooth

            By KonaRider04

            from Aspen, CO

            About Me Avid Cyclist

            Verified Reviewer

            Pros

            • Durable
            • Lightweight
            • Precise Shifting

            Cons

              Best Uses

              • Mountain Biking

              Comments about Shimano M770 XT 9 Speed Cassette:

              A noticeable weight savings over the Deore level cassette; smooth-shifting to boot.

              • Was this a gift?:
              • No
               
              5.0

              Excellent

              By M Yachad

              from Israel

              About Me Avid Cyclist

              Verified Reviewer

              Pros

              • Durable
              • Easy To Install
              • Enhances Pedaling Efficiency
              • Lightweight
              • Precise Shifting

              Cons

                Best Uses

                • Mountain Biking

                Comments about Shimano M770 XT 9 Speed Cassette:

                I installed it on my LX hub, an upgrade from 8 to 9 speed, to give me extra ability on steep climbs. It shifts perfectly - great return on my investment!

                • Was this a gift?:
                • No
                 
                5.0

                You NEED XT

                By Clydesdale JHam

                from San Tan Valley, AZ

                About Me Casual/ Recreational

                Verified Reviewer

                Pros

                • Durable
                • Easy To Install
                • Enhances Pedaling Efficiency
                • Lightweight
                • Precise Shifting

                Cons

                  Best Uses

                  • Mountain Biking

                  Comments about Shimano M770 XT 9 Speed Cassette:

                  I love the difference adding XT components has made to my riding. The shifting is smooth and responsive. The cassette is lightweight and was easy to install. I would recommend if you're wanting to improve your riding experience and you don't have Shimano XT components, GET THEM!!!! Especially from Jenson. Best prices out there.

                  • Was this a gift?:
                  • No
                   
                  5.0

                  Light for the price

                  By Old Guy

                  from N. Georgia

                  About Me Avid Cyclist

                  Verified Buyer

                  Pros

                  • Cheaper Than Xtr
                  • Good price
                  • Shifts Great

                  Cons

                    Best Uses

                    • Mountain Biking

                    Comments about Shimano M770 XT 9 Speed Cassette:

                    Good product, standard tool installation and works well with my XTR drivetrain. Thanks for the good price.

                    • Was this a gift?:
                    • No

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