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Shimano M770 XT 9 Speed Cassette

Item #: CS306B00
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USD$56.99 48% 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

REVIEW SNAPSHOT®

by PowerReviews
Shimano M770 XT 9 Speed Cassette
 
4.3

(based on 35 reviews)

Ratings Distribution

  • 5 Stars

     

    (20)

  • 4 Stars

     

    (11)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

93%

of respondents would recommend this to a friend.

Pros

  • Precise shifting (24)
  • Easy to install (22)
  • Durable (18)
  • Lightweight (18)
  • Enhances pedaling efficiency (13)

Cons

    Best Uses

    • Mountain biking (22)
    • Road biking (3)
      • Reviewer Profile:
      • Avid cyclist (10), Casual/ recreational (10), Competitive cyclist (3)
      • Was this a gift?:
      • No (26)

    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 35 customers

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    Displaying reviews 1-10

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    5.0

    So cheap, you should get 2...

    By Peter

    from DC

    About Me Avid Cyclist

    Verified Buyer

    Pros

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

    Cons

      Best Uses

      • Mountain Biking

      Comments about Shimano M770 XT 9 Speed Cassette:

      Here you got a wonderful value from Jenson! These are light and durable and for 57 bucks you just can't complain at all! I have used the HG 750,760 and 770, and they all are consistent in their performance, just the finish is different(cheaper for sure on the 770) but the performance and longevity are the same. Highly recommended!

      • Was this a gift?:
      • No
       
      5.0

      Excellent Buy!

      By Jim weekend rider

      from Phoenix, AZ

      About Me Casual/ Recreational

      Verified Buyer

      Pros

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

      Cons

        Best Uses

        • Mountain Biking

        Comments about Shimano M770 XT 9 Speed Cassette:

        Glad to find this incredible buy.

        • Was this a gift?:
        • No
         
        4.0

        Nice Cassette

        By Eradicator

        from Coral Springs, FL

        About Me Casual/ Recreational

        Verified Buyer

        Pros

        • Lightweight
        • Precise Shifting

        Cons

          Best Uses

          • Mountain Biking

          Comments about Shimano M770 XT 9 Speed Cassette:

          Nice, ligthweight cassette compared to the Shimano LX I was replacing. Shifts cleanly. Just got it recently - so far so good.

          • Was this a gift?:
          • No
           
          4.0

          It works!

          By Marine 61

          from San Francisco, CA.

          About Me Casual/ Recreational

          Verified Buyer

          Pros

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

          Cons

          • None

          Best Uses

          • Mountain Biking

          Comments about Shimano M770 XT 9 Speed Cassette:

          I had to change my cassette out as it's been on my bike for a number of years now. I've read the reviews and talked to people that have had this model, so I tried it.

          After about 5 months, I have no complaints, it's worked like it should. Buy it, it's easy on the pocket book, easy to install and it just plain works.

          • Was this a gift?:
          • No
           
          5.0

          Best technology in a cassette

          By Bond, Jamis Bond

          from Chandler, AZ

          About Me Casual/ Recreational

          Verified Buyer

          Pros

          • Durable
          • Easy To Install
          • Precise Shifting
          • Protective Technology

          Cons

            Best Uses

            • Mountain Biking

            Comments about Shimano M770 XT 9 Speed Cassette:

            What prompted me to give this a 5-star rating was the genius of including the pegs on the back of the big sprocket to prevent the chain from jamming into the spokes if it derails. Even with a perfectly-adjusted derailleur, the chain can derail in a crash (I know from experience). The pegs caught the chain in my case and the chain actually popped back onto the large sprocket all by itself when I spun the cranks! Genius!

            The cassette performs as well as any I've used - I don't notice any difference other than the protective technology mentioned above.

            • Was this a gift?:
            • No
             
            5.0

            Easy all round

            By Willied

            from Couva, Trinidad & Tobago

            About Me Competitive Cyclist

            Verified Buyer

            Pros

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

            Cons

              Best Uses

              • Mountain Biking

              Comments about Shimano M770 XT 9 Speed Cassette:

              This is a new set as I am making up a new Race day set up with the Easton Wheelset

              • Was this a gift?:
              • No
               
              4.0

              Lasts

              By Adam

              from Honeoye Falls, NY

              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 rock this on my hardtail and it lasted about 3.5 years. I changed the chain once when it wore and then swapped out the cassette/chain again when things were worn. I have two trail bikes so the wear is spread between them.

                • Was this a gift?:
                • No
                 
                4.0

                More gears

                By sanmanbob

                from Tampa, FL

                About Me Avid Cyclist

                Verified Buyer

                Pros

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

                Cons

                  Best Uses

                  • Road Biking

                  Comments about Shimano M770 XT 9 Speed Cassette:

                  I brought this cassette to do the Horrible Hundred in Florida, it did the job very happy.

                  • Was this a gift?:
                  • No
                   
                  5.0

                  Nice riding and good looking

                  By hopper

                  from Langley, BC, Canada

                  About Me Commuter

                  Verified Buyer

                  Pros

                  • Easy To Install
                  • Precise Shifting

                  Cons

                    Best Uses

                    • Mountain Biking

                    Comments about Shimano M770 XT 9 Speed Cassette:

                    The cassette was quickly installed and it is a pleasure to shift through the gears. Time will show its wear resistance.

                    • Was this a gift?:
                    • No

                    (1 of 1 customers found this review helpful)

                     
                    3.0

                    Great cassette but needed work ? ?

                    By J

                    from loma linda

                    About Me Casual/ Recreational

                    Verified Reviewer

                    Pros

                    • Durable
                    • Precise Shifting

                    Cons

                    • Difficult To Install

                    Best Uses

                      Comments about Shimano M770 XT 9 Speed Cassette:

                      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!

                      • Was this a gift?:
                      • No

                      Displaying reviews 1-10

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                      Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.