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Shimano M640 Zee Shift Lever

USD$19.99 17% off USD$23.99 msrp
Item #: SL245A00
USD$19.99 17% off USD$23.99 msrp
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Shimano M640 Zee Shift Lever

Zee is Shimano’s new line of Gravity-specific components, designed and priced for those of us who do not have multi-million dollar sponsors. Specifically designed as a rear-only lever for 1x10 drivetrains, the M640 Zee shifter features crisp, consistent Dyna-Sys shifts and 2-way release. The Zee shifter's ergonomics make for an extremely comfortable, intuitive setup for the best performance when ascending or descending. The lever body is built for hard wear and tough usage, to continue working even after impact. Paired up with a Zee or Saint rear derailleur, you will be equipped to tackle any trail, no matter how gnarly.

Features :

  • Dyna-Sys 10-speed shift lever, rear only (1x10 specific)
  • Rapid Fire Plus
  • 2-way release (upshifts actuate with thumb or index finger)
  • Textured Shifter Levers
  • Linear Shift Effort
  • Shimano Shift cable included
  • Shimano Part Number: ISLM640RA
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REVIEW SNAPSHOT®

by PowerReviews
Shimano M640 Zee Shift Lever
 
4.5

(based on 41 reviews)

Ratings Distribution

  • 5 Stars

     

    (24)

  • 4 Stars

     

    (16)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

97%

of respondents would recommend this to a friend.

Pros

  • Easy to use (27)
  • Durable (23)
  • Lightweight (17)
  • Versatile (11)
  • Easy to install (9)

Cons

  • Heavy / bulky (6)

Best Uses

  • Mountain bikes (27)
  • Mountain biking (8)
    • Reviewer Profile:
    • Avid cyclist (24), Casual/ recreational (13), Competitive cyclist (3)
    • Was this a gift?:
    • No (37)

Most Liked Positive Review

 

Working great so far

I should say upfront that I have only had the shifter for a month, so long-term durability is still to be determined.
So far though, the shifter has performed very well and has...Read complete review

I should say upfront that I have only had the shifter for a month, so long-term durability is still to be determined.
So far though, the shifter has performed very well and has worked exactly as intended with an also newly installed Zee rear derailleur. In general, Zee seems to just be a great combination of all the trickle-down technology Shimano has on offer - I really think it's great value for your dollar for the entire Zee line and this shifter appears to be no different.
The large triggers initially seemed a little too large coming from my previous shifters, but a month in, I can't say I really notice at all - so, no complaints really.
For those that care about weight - my shifter weighed in at 129 grams.

VS

Most Liked Negative Review

 

Good Shifter Poor Build Quality

I have used this shifter for 9 months and in that time I have had to open it up and work on the shifter twice for it to have normal operation. Initially out of...Read complete review

I have used this shifter for 9 months and in that time I have had to open it up and work on the shifter twice for it to have normal operation. Initially out of the box the shifter worked great with a easy pull. after time the shift quality degraded becoming tough to actuate the downshifts. Additionally on two seperate occasions the level became lose and required adjustment. the second time damaged one of the springs in the shifter and rendered it unusable. I will be buying SLX or better shifters from now on. the deore mech it was connected too is running strong and has had zero issues in the same amount of time.

Reviewed by 41 customers

Displaying reviews 1-10

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5.0

Tough and precise

By Bajamba

from Colorado Springs, CO

About Me Avid Cyclist

Verified Buyer

Pros

  • Durable
  • Easy to Use
  • Lightweight
  • Versatile

Cons

    Best Uses

    • Mountain Bikes

    Comments about Shimano M640 Zee Shift Lever:

    crisp feel and instant shifts. Matched with a zee rear derailleur, the system functions flawlessly, even under load. A huge step up from my 2010 XT set up.

    • Was this a gift?:
    • No
     
    4.0

    great shifter little bulky

    By Finn

    from Colorado

    About Me Avid Cyclist

    Verified Buyer

    Pros

    • Durable
    • Easy to Use
    • Lightweight
    • Versatile

    Cons

    • Bulky

    Best Uses

    • Mountain Bikes

    Comments about Shimano M640 Zee Shift Lever:

    The Zee shifter with Zee rear derailer installs and tunes up super easy and fast!

    • Was this a gift?:
    • Yes
     
    5.0

    Nice shift lever

    By RoTTn

    from Norfolk, VA

    About Me Casual/ Recreational

    Verified Buyer

    Pros

    • Easy to Use
    • Lightweight

    Cons

      Best Uses

      • Mountain Bikes

      Comments about Shimano M640 Zee Shift Lever:

      Smooth shifting, big improvement over my stock one. Love it!

      • Was this a gift?:
      • No
       
      5.0

      Simple and reliable

      By Nate

      from Auburn

      About Me Avid Cyclist

      Verified Buyer

      Pros

      • Durable
      • Easy to Use
      • Versatile

      Cons

        Best Uses

        • Commuting
        • Long Rides
        • Mountain Bikes

        Comments about Shimano M640 Zee Shift Lever:

        Great shifter for a great price. Well worth the money.

        • Was this a gift?:
        • No
         
        5.0

        Great product

        By Supraman777

        from Phoenix az.

        About Me Casual/ Recreational

        Verified Buyer

        Pros

        • Durable
        • Easy to Use
        • Versatile

        Cons

          Best Uses

          • Mountain Bikes

          Comments about Shimano M640 Zee Shift Lever:

          I put this on me down hill bike. Great price, but not cheap in Quality. Great buy.

          • Was this a gift?:
          • Yes
           
          5.0

          Great product!

          By Clay

          from Chattanooga

          About Me Avid Cyclist

          Verified Buyer

          Pros

          • Durable
          • Easy to Use
          • Versatile

          Cons

            Best Uses

            • Mountain Bikes

            Comments about Shimano M640 Zee Shift Lever:

            Great shimano product. Exactly as described.

            • Was this a gift?:
            • No
             
            5.0

            Works great! Exultant value

            By Vince in Cleveland

            from Cleveland ohio

            About Me Casual/ Recreational

            Verified Buyer

            Pros

            • Durable
            • Easy to Use
            • Lightweight

            Cons

              Best Uses

              • Mountain Bikes

              Comments about Shimano M640 Zee Shift Lever:

              Shifts great, works as it should.

              • Was this a gift?:
              • No
               
              5.0

              Great Value

              By Russo

              from Buffalo, NY

              About Me Casual/ Recreational

              Verified Buyer

              Comments about Shimano M640 Zee Shift Lever:

              Great shifter for a 1x setup. Fits on bars with Shimano brakes well. Nice index shifting

              • Was this a gift?:
              • No
               
              5.0

              Excellent!

              By DanZ

              from Medellin, Colombia

              About Me Avid Cyclist

              Verified Buyer

              Pros

              • Easy to Use
              • Lightweight

              Cons

                Best Uses

                • Mountain Bikes

                Comments about Shimano M640 Zee Shift Lever:

                Fast and easy to use

                • Was this a gift?:
                • No
                 
                5.0

                Excellent shifter!

                By Dylan

                from Colorado Springs, Colorado

                About Me Competitive Cyclist

                Verified Buyer

                Pros

                • Durable
                • Easy to Use
                • Lightweight
                • Versatile

                Cons

                  Best Uses

                  • Mountain Bikes

                  Comments about Shimano M640 Zee Shift Lever:

                  I broke my old Zee shifter on a tree and was forced to replace it. I ordered an exact replacement from Jenson and within days I was back out on the trail. Install took around 20 minutes. With a little graphite and knowledge of indexing gears, install is super simple.

                  • Was this a gift?:
                  • No

                  Displaying reviews 1-10

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                  Free Shipping Offer

                  Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

                  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.