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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 34 reviews)

Ratings Distribution

  • 5 Stars

     

    (19)

  • 4 Stars

     

    (11)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

93%

of respondents would recommend this to a friend.

Pros

  • Precise shifting (23)
  • Easy to install (21)
  • Durable (17)
  • Lightweight (17)
  • Enhances pedaling efficiency (12)

Cons

    Best Uses

    • Mountain biking (21)
    • Road biking (3)
      • Reviewer Profile:
      • Casual/ recreational (10), Avid cyclist (9), Competitive cyclist (3)
      • Was this a gift?:
      • No (25)

    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 34 customers

    Sort by

    Displaying reviews 1-10

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    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
                     
                    5.0

                    Good price great product

                    By BenH

                    from Grand Rapids MI

                    About Me Bike Messenger

                    Verified Buyer

                    Pros

                    • Easy To Install
                    • Precise Shifting

                    Cons

                      Best Uses

                      • Mountain Biking

                      Comments about Shimano M770 XT 9 Speed Cassette:

                      easy to install and increased shifting firmness... if it lasts half the life (6 years) of my old Shimano cassette I'll be happy

                      • Was this a gift?:
                      • No

                      Displaying reviews 1-10

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