Nashbar Mountain Rear Derailleur

Item # NA-RDM9
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Nashbar Mountain Rear Derailleur
Introducing the new Nashbar Mountain Bike Rear Derailleur. Nashbar has teamed up with MicroShift once again to bring you our first mountain bike group this will only be available here at Nashbar.
  • Lightweight alloy construction with composite pulleys puts the Nashbar rear derailleur at 229g--that's 20 grams less the a Shimano SLX rear derailleur
  • Compatible with Shimano 8/9-speed drivetrains
> long cage
Nashbar Mountain Rear Derailleur
  • MFPARTNUMBER RD-M55
  • WEIGHT 229g.
  • MATERIAL Alloy
  • COMPATIBILITY Shimano 9 speed
  • MAX. COG 34T
  • MIN. COG 11T
  • CAPACITY 45T
  • MAX. FRONT DIFFERENCE 22T
  • MAX. CHAINRING
  • SPRING TYPE High normal (traditional)
  • CLAMP DIAMETER
  • Rating 4

REVIEW SNAPSHOT®

by PowerReviews
Nashbar Mountain Bike Rear Derailleur
 
4.1

(based on 35 reviews)

82%

of respondents would recommend this to a friend.

Pros

  • Lightweight (25)
  • Easy to use (19)
  • Durable (11)
  • Versatile (10)

Cons

  • Weak (4)

Best Uses

  • Mountain bikes (22)
  • Commuting (16)
  • Road bikes (12)
  • Long rides (9)
    • Reviewer Profile:
    • Avid cyclist (27), Casual/ recreational (5), Competitive cyclist (3)
    • Was this a gift?:
    • No (32)

Reviewed by 35 customers

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Displaying reviews 1-10

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4.0

As good as the old LX

By COOKIE

from ASHLAND, OR

About Me Avid Cyclist

See all my reviews

Verified Buyer

Pros

    Cons

      Best Uses

        Comments about Nashbar Mountain Bike Rear Derailleur:

        Works as good as any Shimano Derailleur I've every installed.
        We will see, with time, how durable it is

        • Was this a gift?:
        • No

        Comment on this review

         
        5.0

        Exemplary wide range rear derailleur.

        By 13billydavid

        from Chicago, IL.

        About Me Casual/ Recreational

        See all my reviews

        Verified Buyer

        Pros

        • Easy to Use
        • Lightweight
        • Versatile

        Cons

          Best Uses

          • Road Bikes

          Comments about Nashbar Mountain Bike Rear Derailleur:

          This derailleur has everything you need in a wide range touring derailleur. It shifts smoothly and wraps a lot of chain. It's also indexable but works great w/ friction shifters. It's very light! Doesn't look too out of place on a classic bike. And the price is unbeatable, you can pay more and get less.

          • Was this a gift?:
          • No

          Comment on this review

          (0 of 6 customers found this review helpful)

           
          3.0

          a substitute for Shimano

          By Russ

          from San Rafael, CA

          About Me Casual/ Recreational

          Verified Buyer

          Pros

          • Lightweight

          Cons

            Best Uses

            • Commuting
            • Mountain Bikes

            Comments about Nashbar Mountain Bike Rear Derailleur:

            The derailleur has not yet been installed so I cannot provide any in-use feedback, so that is why only the 3 star rating. However, here are my pre-install comments: 1- I bought this Nashbar copy to replace an existing old Shimano XT unit. The catalog description and pricing was enticing enough to give it a try. 2- Physically, the Nashbar unit feels like it will do the job, construction is good, and the upper idler seems to have the proper slack. The appearance is good but very plain; it does not have the Shimano "bling". Of course the pricing says that you aren't paying for bling.

            • Was this a gift?:
            • No

            Comment on this review

             
            5.0

            Works great!

            By Steve

            from Watervliet NY

            About Me Avid Cyclist

            See all my reviews

            Verified Buyer

            Pros

            • Easy to install
            • Easy to Set Up
            • Easy to Use
            • Lightweight

            Cons

              Best Uses

              • Mountain Bikes

              Comments about Nashbar Mountain Bike Rear Derailleur:

              I replaced a totaled XTR with this based on other reviews. It installed in minutes, was easy to adjust by following the included instructions and is lighter than the original.

              • Was this a gift?:
              • No

              Comment on this review

              (3 of 4 customers found this review helpful)

               
              4.0

              Follow up review after 400 miles

              By Cycling for > 25 years

              from Pennsylvania

              About Me Avid Cyclist

              Pros

              • Lightweight

              Cons

                Best Uses

                • Mountain Bikes
                • Road Bikes

                Comments about Nashbar Mountain Bike Rear Derailleur:

                This is a follow up for my previous review below. So far I've put around 400 miles on the derailleur over the past few months and have had ZERO problems with it. After the initial install I haven't had to adjust it at all, and it hasn't missed any shifts at all. I've been using it on a road bike converted over to a flat bar set up, and I've switched the front crank from a double to a triple with this rear derailleur on and no problems at all. I started the bike out with a 53/39 crank, then went to a triple 50/39/30 crank, and now I've got a 48/36/26 crank on it now and the derailleur has worked perfect with all three cranks. This derailleur is made by Microshift, and Nashbar actually sells it cheaper under their own brand name than their competitors do under the Microshift brand name, so it's a really great deal. This is the best price out there for a derailleur that can handle a triple crank and a 34 tooth rear sprocket, and at 231 grams that it weighs it's also lighter than anything else close to it's price range from any other manufacturer. Would I buy one again ?...YES !...as a matter of fact I plan on ordering another one. For the weight, quality, and price you can't beat it.

                • Was this a gift?:
                • No

                Comment on this review

                 
                5.0

                Great derailleur

                By Ambrose

                from Memphis, TN

                About Me Competitive Cyclist

                Verified Buyer

                Pros

                • Durable

                Cons

                  Best Uses

                  • Mountain Bikes

                  Comments about Nashbar Mountain Bike Rear Derailleur:

                  Crisp shifts. I don't notice any difference between this one and a more expensive Shimano product. This is my second one that I've bought and am very satisfied with them. I race bikes and they perform.

                  • Was this a gift?:
                  • No

                  Comment on this review

                  (1 of 1 customers found this review helpful)

                   
                  4.0

                  Rear Mountain Derailleur

                  By Big Ring Bill

                  from Novi, Michigan

                  About Me Avid Cyclist

                  See all my reviews

                  Verified Buyer

                  Pros

                  • Lightweight
                  • Versatile

                  Cons

                    Best Uses

                    • Mountain Bikes

                    Comments about Nashbar Mountain Bike Rear Derailleur:

                    Converting a single speed to a 1 x 9. Not installed yet, but product had good appearance and workmanship is very good. Experience with order logistics was good, fast ordering and shipping.

                    • Was this a gift?:
                    • No

                    Comment on this review

                    (1 of 1 customers found this review helpful)

                     
                    5.0

                    Great deal!!!

                    By Bike shop geek

                    from Tehachapi, Ca

                    About Me Avid Cyclist

                    Verified Buyer

                    Pros

                    • Durable
                    • Easy to Use
                    • Lightweight

                    Cons

                      Best Uses

                      • Commuting
                      • Mountain Bikes

                      Comments about Nashbar Mountain Bike Rear Derailleur:

                      I bought this to replace a broken XT unit. At 1/3 the price this thing is awesome! Works great, very little initial setup time. Super light weight. Looks great too!

                      • Was this a gift?:
                      • No

                      Comment on this review

                       
                      2.0

                      Didn't last

                      By Dr_LHA

                      from State College, PA

                      About Me Avid Cyclist

                      Pros

                        Cons

                        • Weak

                        Best Uses

                        • Commuting

                        Comments about Nashbar Mountain Bike Rear Derailleur:

                        At first I liked this, it's large, almost gloriously chunky and industrial looking, plus it felt like it was well made/machined. For the price it seemed like a steal. Certainly set up was simple and for a few hundred miles it worked great for me. Then I started to have issues getting to the smallest cog and it turned out that the derailleur simply had lost it's springiness, it had simply lost the tension required to get there. Kudos to Nashbar, they refunded me fully. I decided I'd spend the extra bucks and go with a Shimano part instead, which have never failed me like this in the past.

                        • Was this a gift?:
                        • No

                        Comment on this review

                         
                        4.0

                        Can"t be beat!

                        By Jim

                        from SoFla

                        About Me Competitive Cyclist

                        See all my reviews

                        Verified Buyer

                        Pros

                        • Lightweight

                        Cons

                          Best Uses

                          • Mountain Bikes

                          Comments about Nashbar Mountain Bike Rear Derailleur:

                          Replaced a 7yr old XT with this. Set up matters! Shifts so good, let us see for how long but considering the PRICE this cannot be beat.

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                          • No

                          Comment on this review

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