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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
 
4.4

(based on 28 reviews)

Ratings Distribution

  • 5 Stars

     

    (12)

  • 4 Stars

     

    (15)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

96%

of respondents would recommend this to a friend.

Pros

  • Easy to use (15)
  • Durable (14)
  • Easy to install (9)
  • Lightweight (9)
  • Attractive (5)

Cons

  • Heavy / bulky (5)

Best Uses

  • Mountain bikes (15)
  • Mountain biking (8)
    • Reviewer Profile:
    • Avid cyclist (17), Casual/ recreational (8)
    • Was this a gift?:
    • No (26)

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 28 customers

Displaying reviews 1-10

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4.0

Affordable shifter

By John

from RI

About Me Avid Cyclist

Verified Buyer

Pros

  • Easy To Install

Cons

    Best Uses

    • Mountain Biking

    Comments about Shimano M640 Zee Shift Lever:

    Nice but bulky

    • Was this a gift?:
    • No
     
    5.0

    Great Value

    By dbauer

    from Burt, MI

    About Me Avid Cyclist

    Verified Buyer

    Pros

    • Price

    Cons

    • None

    Best Uses

    • Mountain Biking

    Comments about Shimano M640 Zee Shift Lever:

    Great price for quality.

    • Was this a gift?:
    • No
     
    5.0

    i would buy this product again

    By T.ROD21

    from Brooklyn NY

    About Me Avid Cyclist

    Verified Buyer

    Pros

    • Attractive Design
    • Durable
    • Easy To Install
    • Great Price
    • Lightweight

    Cons

      Best Uses

      • Mountain Biking

      Comments about Shimano M640 Zee Shift Lever:

      The Zee m640 is great.Great shifting on the gears no let downs at all.

      • Was this a gift?:
      • No
       
      4.0

      Great performance at a great price.

      By The Bruiser

      from Nashua, NH

      About Me Competitive Cyclist

      Verified Reviewer

      Pros

      • Durable
      • Easy To Install

      Cons

      • Bulky

      Best Uses

      • Downhill
      • Mountain Biking
      • Racing

      Comments about Shimano M640 Zee Shift Lever:

      The Shimano M640 Zee Shift Lever works great and shifts perfectly. My only complaint is that its on the larger/bulky side of shifters. I used to run and older SRAM X9 shifter and it was half the size of the ZEE shifter. But overall, its a great shifter.

      • Was this a gift?:
      • No
       
      2.0

      Good Shifter Poor Build Quality

      By Jake

      from Charlotte, NC

      About Me Avid Cyclist

      Verified Reviewer

      Pros

      • Cheap
      • Easy to Use
      • Versatile

      Cons

      • Bulky
      • Poor Quality
      • Weak

      Best Uses

      • Mountain Bikes

      Comments about Shimano M640 Zee Shift Lever:

      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.

      • Was this a gift?:
      • No
       
      4.0

      Works great, at a price thats unbeatable...

      By Sam Dirt

      from Orlando Florida

      About Me Avid Cyclist

      Verified Buyer

      Pros

      • Durable
      • Easy to Use
      • Lightweight

      Cons

      • None

      Best Uses

      • Long Rides
      • Mountain Bikes
      • Urban Assault

      Comments about Shimano M640 Zee Shift Lever:

      I have this shifter on my AM hardtail along with the zee derailer, zee crankset and the zee derailer. The zee line of parts are rock solid.....

      • Was this a gift?:
      • No
       
      4.0

      Great Upgrade

      By Rick

      from SW VA

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Easy to Use

      Cons

        Best Uses

        • Mountain Bikes
        • Road Bikes

        Comments about Shimano M640 Zee Shift Lever:

        Upgrade single speed to 1 X 10

        • Was this a gift?:
        • No
         
        4.0

        Great shifter at good price

        By Dlux

        from Tucson

        About Me Avid Cyclist

        Verified Buyer

        Pros

        • Easy to Use

        Cons

        • Bulky

        Best Uses

        • Mountain Bikes

        Comments about Shimano M640 Zee Shift Lever:

        Great shifter for the price.

        • Was this a gift?:
        • No
         
        4.0

        GREAT SHIFTER

        By Gnezis

        from Nogales Arizona

        About Me Casual/ Recreational

        Verified Buyer

        Pros

        • Durable
        • Easy to Use
        • Lightweight
        • Versatile

        Cons

        • Not So Cool Design

        Best Uses

          Comments about Shimano M640 Zee Shift Lever:

          Great product, great brand and quality, will be better with a better design i think

          • Was this a gift?:
          • No
           
          4.0

          upgrade

          By davido

          from riverside

          About Me Casual/ Recreational

          Verified Buyer

          Pros

          • Durable
          • Easy to Use
          • Lightweight

          Cons

            Best Uses

            • Mountain Bikes

            Comments about Shimano M640 Zee Shift Lever:

            Used with a new drivetrain, shadow derailer, Shimano chain and slx cassette. All shifted perfectly with a simple install.

            • 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.