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
  • 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
 
4.2

(based on 49 reviews)

85%

of respondents would recommend this to a friend.

Pros

  • Lightweight (31)
  • Easy to use (29)
  • Durable (17)
  • Versatile (16)
  • Inexpensive (3)

Cons

  • Weak (6)
  • Hard to install (3)

Best Uses

  • Mountain bikes (32)
  • Commuting (25)
  • Road bikes (18)
  • Long rides (17)
    • Reviewer Profile:
    • Avid cyclist (37), Casual/ recreational (8), Competitive cyclist (4)
    • Was this a gift?:
    • No (46)

Reviewed by 49 customers

Displaying reviews 1-10

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5.0

Follow Up

By Tim from VT

from It's finally Spring

About Me Avid Cyclist

Verified Reviewer

Pros

  • Durable
  • Easy to Use
  • Versatile

Cons

    Best Uses

    • Commuting
    • Long Rides
    • Mountain Bikes

    Comments about Nashbar Mountain Bike Rear Derailleur:

    A follow - up. on a previous review. I recently built a 1x11 26er for my son using one of the popular "S" brands, as the Microshift 11x mech is as yet not commonly available. (Microshift is Nashbar's house brand.) While the "S" mech was functionally OK, the documentation was absolutely horrible, and it took a lot of searching to find some fitment information necessary for a clean installation. Meanwhile, the 3x9 Nashbar install I did with this one a few weeks ago was simply buttah and dropped in in minutes.

    I found the fit and finish superior on the Nashbar brand to that of the big two at this group level, The printed documentation was included in the package was clear and well thought out. I was thankful for not having to wade through a dozen online pdf files while wrenching. While there are corners cut on brand "S," this mech has everything you'll want, and not much you don't. While it may have a few extra grams here and there, but they are used to increase reliability and strength. It's time for Nashbar to stock the 11x mech.

    This is a mech I'll go to every time, by choice. It punches far above its weight.

    • Was this a gift?:
    • No

    (0 of 1 customers found this review helpful)

     
    5.0

    None better for the price.

    By Tim from VT

    from Outer Frozaria

    About Me Avid Cyclist

    Verified Reviewer

    Pros

    • Durable
    • Easy to Use
    • Versatile

    Cons

      Best Uses

      • Mountain Bikes

      Comments about Nashbar Mountain Bike Rear Derailleur:

      The small family company that makes these for Nashbar punches well above its weight. This is a tough and tidy rear mech, It has nice fit and finish, and represents excellent value. The castings are strong enough to take a hit or several. It drops right in and bolts right up. Instructions are clear and understandable, should you be setting one up for the first time.

      If you need better, you'll be sponsored. In that case, you'll be told what to ride and won't have any use for reviews.

      • Was this a gift?:
      • No
       
      5.0

      Pleased

      By Nigel

      from San Jose, CA

      About Me Avid Cyclist

      See all my reviews

      Verified Reviewer

      Pros

      • Easy to Use
      • Lightweight
      • Versatile

      Cons

        Best Uses

        • Commuting
        • Long Rides

        Comments about Nashbar Mountain Bike Rear Derailleur:

        I purchased this RD awhile back, and finally installed it on one of my commuter bikes - a 1994 Trek 930, with a Microshift twist grip 8 speed shifter (original cable), Jagwire housing and a 11-28T Shimano cassette. The crankset is a Metropolis 48-36-26. It was fast to setup. I regret spending more on a Shimano M592 for my other project.

        • Was this a gift?:
        • No
         
        5.0

        worked perfectly

        By john

        from Portland, OR

        About Me Avid Cyclist

        See all my reviews

        Verified Buyer

        Pros

          Cons

            Best Uses

            • Mountain Bikes

            Comments about Nashbar Mountain Bike Rear Derailleur:

            I purchased this to replace the derailleur on my circa 1980 Bianchi mountain bike. Friction thumb shifters, of course. I installed the derailleur, a perfect fit. I adjusted high and low travel limits and b tension before installing the chain. No further adjustment was required.

            This derailleur is quick, sure and almost automatic. It is way better than the original.

            • Was this a gift?:
            • No
             
            5.0

            Nothing Better Beats BikeNashbar!

            By Juanito Hayburg aka BIKERJOHN

            from El PasoTX-USA

            About Me Avid Cyclist

            See all my reviews

            Verified Buyer

            Pros

            • Durable
            • Easy to Use
            • Inexpensive
            • Lightweight
            • Versatile

            Cons

            • Tough to Install

            Best Uses

            • Bike Touring
            • Commuting
            • Long Rides
            • Mountain Bikes
            • Road Bikes

            Comments about Nashbar Mountain Bike Rear Derailleur:

            Due to the precarious location of all derailleurs, they are particularly susceptible to damage. I have found that, as I ruin them simply from constant use/wear & tear, that it is far easier for me to replace significantly more expensive, not-much-lighter, and certainly more fragile name brand-derailleurs with this outstanding long-bracket version. The fact that it is only a few grams heavier actually means it is far more durable/heavier-duty. Anybody who pedals knows the frustration of a foreign object (twine, tree branch, etc.) breaking/fouling that expensive derailleur, (turning it into an unbelievably expensive single-speed, as I had to while overlooking Marfa Southbound on TX17 during my Trans-Texas Bicycle Odyssey, 2011; read my 4th book for exciting details)will appreciate this reliable & inexpensive BN derailleur. I pedal with it and have two more in reserve for when replacement/repair time comes. The only caution is when mounting it on the hanger--the fine aluminum threads are easy to strip if slightly askew. This great 5-star product certainly gets my "Wheel of Approval"!

            • Was this a gift?:
            • No
             
            5.0

            Less cost, more use!

            By Juanito Hayburg aka BIKERJOHN

            from El PasoTX-USA

            About Me Avid Cyclist

            See all my reviews

            Verified Buyer

            Pros

            • Durable
            • Easy to Use
            • Lightweight
            • Reliable
            • Versatile

            Cons

            • Easy To Crossthread

            Best Uses

            • Any Bike
            • Commuting
            • Long Rides
            • Mountain Bikes
            • Road Bikes

            Comments about Nashbar Mountain Bike Rear Derailleur:

            The original product is quite expensive and fragile, which is coded as "lightweight". Best replacement is this magnificent rear derailleur, but be careful with initial attachment--it's easy to miss- or cross-thread. Replacing this part is easy, though inserting and running a new derailleur cable is difficult & requires more time. This is my go-to source (Bike-Nashbar) for quality components like this derailleur; certainly gets my "Wheel of Approval".

            • Was this a gift?:
            • No
             
            5.0

            Why pay more for less?

            By Juanito Hayburg aka BIKERJOHN

            from El PasoTX-USA

            About Me Avid Cyclist

            See all my reviews

            Verified Reviewer

            Pros

            • Durable
            • Versatile

            Cons

            • Crossthreads Too Easy

            Best Uses

            • Biketouring
            • Commuting
            • Long Rides
            • Mountain Bikes
            • Road Bikes

            Comments about Nashbar Mountain Bike Rear Derailleur:

            I purchased a Doublevision in 2000 with the intent that my daughter would be stoker (My son, 2 years older, could pedal his own) on a biketour from Victoria to Tijuana. My better half objected, so I had an extremely expensive tandem recumbent, which I've learned to love over the past 16 years. Indeed, it has survived longer under my feet than any previous bicycle I've owned, including my beloved Stumpjumper of 12 years. The wonderful Doublevision has proved worthy of me/my passion for pedaling, suffering serious damage after I got rear ended by a hit-and-run motorist 29MAR2009. I had been making repairs with OEM parts, including expensive derailleurs, the last one failing completely within sight of MarfaTX during my 2011 Trans-Texas Bicycle Odyssey between El PasoTX & HoustonTX. Unfortunately, the failure meant my expensive 27-speed Doublevision became an even more expensive single speed, and greatly increased my travel time to Alpine, 25miles/40kms West. Arriving there the next day, I went straight to Bikeman John, the only shop between El Paso and Del Rio on US90. At that time, a 9-speed derailleur was still a "new" item, but Bikeman John had a stout 8-speed derailleur which proved more than satisfactory until I returned home the next month.
            As a very long time BikeNashbar customer, I was perusing one of the catalogs when I saw this fine derailleur which equaled the OEM component. I'll never buy another name brand item if BikeNashbar continues to produce high quality like this derailleur!

            • Was this a gift?:
            • No
             
            5.0

            Works well

            By That guy in Arkansas.

            from E.S. Arkansas.

            About Me Avid Cyclist

            See all my reviews

            Pros

            • Easy to Use

            Cons

              Best Uses

              • Commuting
              • Long Rides

              Comments about Nashbar Mountain Bike Rear Derailleur:

              Bought this to put on my classic late eighties tourer to save wear on my vintage derailleur. Running eight speed rear with friction bar ends.
              Shifts smooth. Cant say how it works with indexing.
              Took it on a 15 day 1400 mile trip over dusty rail trails, gravel, and pavement. Rain and mud, heat and dust. Never missed a shift.

              I plan on getting one or two more for some other bikes as their mechs start to wear.

              • Was this a gift?:
              • No
               
              4.0

              Good Derailleur

              By Archer

              from Oklahoma

              About Me Casual/ Recreational

              See all my reviews

              Verified Buyer

              Pros

              • Easy to Use

              Cons

                Best Uses

                • Mountain Bikes

                Comments about Nashbar Mountain Bike Rear Derailleur:

                Easy to setup. Pairs well with the Nashbar MTB shifter I purchased. I've only tried my new setup on the road, I plan on taking this on the trail soon on my new bike. I may report back if there is anything noteworthy. I expect it will work just fine for my intended use.

                • Was this a gift?:
                • No
                 
                2.0

                weak

                By Rhy

                from Sjc

                About Me Avid Cyclist

                Pros

                • Lightweight

                Cons

                • Weak

                Best Uses

                • Commuting
                • Road Bikes

                Comments about Nashbar Mountain Bike Rear Derailleur:

                Tried as a replacement for an old deore XT. Worked fine as long as there were no hills, but as soon as I started pedaling up anything steep the shifting went haywire. Awful, replaced with an m772 shadow XT and the shifting problems on hills disappeared entirely.

                I've learned my lesson about rear derailleurs -- buy nice or buy twice.

                • Was this a gift?:
                • No

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