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 46 reviews)

84%

of respondents would recommend this to a friend.

Pros

  • Lightweight (30)
  • Easy to use (26)
  • Durable (15)
  • Versatile (13)
  • Inexpensive (3)

Cons

  • Weak (6)
  • Hard to install (3)

Best Uses

  • Mountain bikes (30)
  • Commuting (23)
  • Road bikes (18)
  • Long rides (15)
    • Reviewer Profile:
    • Avid cyclist (34), Casual/ recreational (8), Competitive cyclist (4)
    • Was this a gift?:
    • No (43)

Reviewed by 46 customers

Displaying reviews 1-10

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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

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      5.0

      Nothing Better Beats BikeNashbar!

      Profile Image

      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

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      5.0

      Less cost, more use!

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      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

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      5.0

      Why pay more for less?

      Profile Image

      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

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      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

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        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

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          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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          5.0

          Excellent

          By Deets

          from Sandpoint, ID

          About Me Competitive Cyclist

          See all my reviews

          Verified Buyer

          Pros

          • Cheap
          • Easy to Use
          • Precise

          Cons

          • Weak

          Best Uses

          • Commuting
          • Long Rides
          • Mountain Bikes
          • Road Bikes

          Comments about Nashbar Mountain Bike Rear Derailleur:

          Far and away the best rear derailleur for the money. I have now bought two, both of which have worked flawlessly and delivered quick, crisp, and precise shifts once adjusted correctly. I use Nashbar brand shifters as well. I have an X0 rear derailleur on one of my bikes, and I cannot tell a difference between the two unless I look at my bank statement. I did manage to slightly bend the cage of one of these derailleurs in a bad crash that also bent my rotor and wheel, but I feel this was completely user error and not the fault of the derailleur, although it is the only derailleur I've ever bent. I will never buy a different rear derailleur.

          • Was this a gift?:
          • No

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          4.0

          Good touring derailieur for 34 tooth sprocket -

          By klmmicro

          from San Diego, CA

          About Me Avid Cyclist

          See all my reviews

          Verified Buyer

          Pros

          • Easy to Use
          • Lightweight

          Cons

            Best Uses

            • Commuting
            • Long Rides
            • Road Bikes

            Comments about Nashbar Mountain Bike Rear Derailleur:

            Bought this derailleur as a replacement for an 80's circa touring bike. Needed something to take the place of an ancient Sun with stripped out adjustment screws. Searching uncovered this gem that installed easily and adjusted perfectly for the old Bruce Gordon. Being that the bike is lacking indexed shifting, ratios and such are not a concern.

            Quality is high with a nice finish on all external surfaces. While the adjustment and lock screws hold their position with no concern on the road, I would want to keep an eye on them riding across rough surfaces like gravel and such. Compared to the long cage Shimano on my MTB, this one has much lighter spring tension on the cage. Again, not an issue on average paved surface. No ghostr shifting so far on smooth road rides.

            I would recommend this for anyone needing to upgrade an older touring rig or for the kit of replacement parts on the sag wagon. Only time will tell on how it holds up to extended use as I have only managed a hundred miles of cruising with it so far.

            • Was this a gift?:
            • No

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            5.0

            Silky smooth, for an inexpensive derailleur

            By NH cycle Dad

            from Bethlehem, NH

            About Me Casual/ Recreational

            See all my reviews

            Verified Buyer

            Pros

            • Easy to Use
            • Lightweight

            Cons

              Best Uses

              • Mountain Bikes

              Comments about Nashbar Mountain Bike Rear Derailleur:

              I bought this for my wife's MT Bike. It worked great right out of the box. After two 15 mile rides in pretty muddy terrain, still shifting silky smooth!!

              • Was this a gift?:
              • No

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