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Shimano M640 Zee Disc Brake

Item #: BR245C01
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Shimano M640 Zee Disc Brake I-Spec A

Shimano Zee in a new line of gravity components that is more affordable than Shimano Saint components. Zee features the high end materials and reliability of Shimano components.

The new Zee hydraulic disc brakes feature a powerful four piston caliper and shorty style brake levers. The brakes come with Ice Technology brake pads that will help keep your brakes running cool even when the downhill course gets gnarly. Zee brakes have One-Way bleeding, for fast and easy maintenance.

Shimano M640 Zee Disc Brake Features

  • I-spec A
  • I-spec "A" is the older version, for the newer I-spec "B" type click here
  • SERVO WAVE lever pivot
  • Shorty Levers
  • High rigidity ceramic pistons for heat insulation
  • Anti-slip dimpled lever blade
  • Radiation fin pad with new metallic compound to improve control and consistency
  • Super stiff high power 3-layer brake hose for a more consistent lever feel
  • One-Way bleed for easy and clean servicing
  • 4 piston caliper
Note: Rotor is not included

REVIEW SNAPSHOT®

by PowerReviews
Shimano M640 Zee Disc Brake
 
4.5

(based on 24 reviews)

Ratings Distribution

  • 5 Stars

     

    (14)

  • 4 Stars

     

    (8)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to install (16)
  • Attractive (13)
  • Durable (11)
  • Lightweight (5)

Cons

    Best Uses

    • Mountain biking (19)
    • Upgrade (5)
    • Racing (4)
      • Reviewer Profile:
      • Avid cyclist (14), Competitive cyclist (5), Casual/ recreational (3)
      • Was this a gift?:
      • No (21)

    Most Liked Positive Review

     

    Everything you can ask for in a brake

    First off, I've never had a problem with anything ordered from Jenson. Always great service and quality products.
    After upgrading my stock mechanical brakes with Hydros, I wasn't happy with what I...Read complete review

    First off, I've never had a problem with anything ordered from Jenson. Always great service and quality products.
    After upgrading my stock mechanical brakes with Hydros, I wasn't happy with what I originally purchased (from different store). So I found these on Jenson at a really great price.
    Out of the box i could tell they were much better then the ones i originally upgraded to. Pretty light, was a little concerned about the brake lever material as it seemed like it would break if laid down to hard…as in wreck. But they have been very sturdy thus far. Installation was simple like most disc brakes are. The only thing that is a little different on these brakes is there isn't a lot of resistance with a small pull of the brake lever. To get a decent amount of braking power i found you have to pull the lever most of the way through the stroke. Which is fine and only takes a little of getting used to. All in all it's a great product for a great price!

    VS

    Most Liked Negative Review

     

    Shimano Zee

    Bought these because they were on sale. You can definitely feel a difference in the amount of stopping power compared to the amount of pressure applied to the brake leaver. (less force to...Read complete review

    Bought these because they were on sale. You can definitely feel a difference in the amount of stopping power compared to the amount of pressure applied to the brake leaver. (less force to stop the bike) I would guess about 15% better. I like the stubby brake leaver. I think the most noticeable difference to me was the heat sink attached to the brake pads, I was impressed with how much heat they pulled out of the pad.

    Reviewed by 24 customers

    Sort by

    Displaying reviews 1-10

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    (0 of 1 customers found this review helpful)

     
    4.0

    work great just have to break them in!

    By flash

    from north bay

    About Me Avid Cyclist

    Verified Buyer

    Pros

    • Easy to Use

    Cons

      Best Uses

      • Mountain Bikes

      Comments about Shimano M640 Zee Disc Brake:

      do hit trees they will win and break wont lol

      • Was this a gift?:
      • No

      (0 of 1 customers found this review helpful)

       
      4.0

      second set really good!!

      By Danny

      from LaVerne,Ca

      About Me Avid Cyclist

      Verified Buyer

      Pros

      • Attractive Design
      • Durable
      • Easy To Install
      • Lightweight

      Cons

        Best Uses

        • Mountain Biking

        Comments about Shimano M640 Zee Disc Brake:

        Second pair getting rid of my old Hayes!!

        (1 of 1 customers found this review helpful)

         
        3.0

        Good power for the money

        By Rob

        from Vancouver BC

        About Me Avid Cyclist

        Verified Buyer

        Pros

        • Power

        Cons

          Best Uses

          • Mountain Biking

          Comments about Shimano M640 Zee Disc Brake:

          These are great brakes for the price. Great power and modulation. Ceramic pistons and heat shedding finned pads.

          The hoses are way too long. Perhaps Jenson could offer a variety of lengths?

          Factory bleed of rear brake was pretty poor. (quick fix).

          One of the master cylinders is weeping mineral oil. Not sure if this will stop but i will monitor closely. Performance is still good.

          • Was this a gift?:
          • No

          (0 of 1 customers found this review helpful)

           
          5.0

          Everything you can ask for in a brake

          By dcibula

          from Iowa

          About Me Competitive Cyclist

          Verified Buyer

          Pros

          • Attractive Design
          • Easy To Install

          Cons

            Best Uses

            • Mountain Biking

            Comments about Shimano M640 Zee Disc Brake:

            First off, I've never had a problem with anything ordered from Jenson. Always great service and quality products.
            After upgrading my stock mechanical brakes with Hydros, I wasn't happy with what I originally purchased (from different store). So I found these on Jenson at a really great price.
            Out of the box i could tell they were much better then the ones i originally upgraded to. Pretty light, was a little concerned about the brake lever material as it seemed like it would break if laid down to hard…as in wreck. But they have been very sturdy thus far. Installation was simple like most disc brakes are. The only thing that is a little different on these brakes is there isn't a lot of resistance with a small pull of the brake lever. To get a decent amount of braking power i found you have to pull the lever most of the way through the stroke. Which is fine and only takes a little of getting used to. All in all it's a great product for a great price!

            • Was this a gift?:
            • No
             
            5.0

            Awsome !!!!!!!

            By froggy

            from Glendale Ca.

            About Me Avid Cyclist

            Verified Buyer

            Pros

            • Always Stays Cool
            • Attractive Design
            • Easy To Install
            • Great Stopping Power
            • Price Was The Best

            Cons

              Best Uses

              • Mountain Biking
              • Upgrade

              Comments about Shimano M640 Zee Disc Brake:

              love them on the trail, they stop great no howling ,really quiet brakes.

              • Was this a gift?:
              • No

              (0 of 1 customers found this review helpful)

               
              4.0

              zee brakes

              By gord

              from calgary canada

              About Me Avid Cyclist

              Verified Reviewer

              Pros

                Cons

                  Best Uses

                    Comments about Shimano M640 Zee Disc Brake:

                    no lever reach adjustment causes me to sometimes scramble for the lever.Great power and no fading.

                    • Was this a gift?:
                    • No
                     
                    4.0

                    Power!! Modulation!!

                    By DT

                    from Spokane, WA

                    About Me Avid Cyclist

                    Verified Buyer

                    Pros

                      Cons

                        Best Uses

                        • Mountain Biking

                        Comments about Shimano M640 Zee Disc Brake:

                        Lots of power, without the bite! easy to cut the line and easy to bleed the brakes.. win/win/win.

                        • Was this a gift?:
                        • No
                         
                        4.0

                        I would buy this again!

                        By Danny

                        from LaVerne,Ca

                        About Me Avid Cyclist

                        Verified Buyer

                        Pros

                        • Attractive Design
                        • Easy To Install
                        • Have Always Used Hope And

                        Cons

                          Best Uses

                          • Mountain Biking

                          Comments about Shimano M640 Zee Disc Brake:

                          I have always used Hayes and Hope but wanted to give them a try so glad that I did! I am a big guy at 250lbs and they stop very well no brake fade at all. Instalation was a snap and I like the way they look on my Foes that I just built up. I am so happy with them going to get another one to replace my old Hayes in the back.

                          • Was this a gift?:
                          • No
                           
                          5.0

                          Fantastic brakes for the price

                          By Simon

                          from Idyllwild, CA

                          About Me Avid Cyclist

                          Verified Buyer

                          Pros

                          • Attractive Design
                          • Durable
                          • Easy To Install
                          • Fantastic Modulation
                          • Powerfull

                          Cons

                            Best Uses

                            • Downhill Mountain Biking
                            • Mountain Biking

                            Comments about Shimano M640 Zee Disc Brake:

                            I replaced my old Codes with the Zees and what a great brake they have turned out to be. They are on my DH bike and I couldn't be happier. Quite a significant saving over the Saints and more than enough power with admittedly, a weight penalty compared to the saints, but as I am not a pro racer, who cares? Highly recommended.

                            • Was this a gift?:
                            • No
                             
                            5.0

                            Great Buy!

                            By Kirby

                            from NC

                            About Me Avid Cyclist

                            Verified Reviewer

                            Pros

                            • Attractive Design
                            • Durable
                            • Easy To Install
                            • Strong

                            Cons

                            • New Pads Expensive

                            Best Uses

                            • DH
                            • Mountain Biking
                            • Upgrade

                            Comments about Shimano M640 Zee Disc Brake:

                            I bought these to upgrade the brakeset on my DH rig. The quad piston design is super strong. My stopping power increased exponentially. Great buy!

                            • Was this a gift?:
                            • No

                            Displaying reviews 1-10

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