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  1. #1
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    Evolution of the MCR frame?

    I am getting back into mountain bike riding after a 20 year hiatus. I am shopping used bikes so I can get a good ride without a huge intial investment.

    I am looking hard at the AIR and the MCR. I know the AIR went through some major design changes over time, such as going from Scandium to hyroformed Aluminum in 2013.

    Just wondering if the MCR design/materials have changed over time, as well.

    TIA

    --shinbone

  2. #2
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    Quote Originally Posted by shinbone View Post
    Just wondering if the MCR design/materials have changed over time, as well.

    TIA

    --shinbone
    I can help with this question. Biggest difference is the 2009 and onward were designed around the newest crop of suspension fork offsets, and had more rear tire clearance with the 73mm bottom bracket shell width. Materials have stayed the same for the entire product life cycle.

    MCR 9
    2006, 2007, 2008
    Seatpost 27.2mm diameter, 400mm length
    Seatpost Clamp 29.6mm
    BB Shell Width 68mm
    Front Derailleur 28.6mm clamp, top pull, low mount (top swing)
    Rear Tire Clearance 2.2 recommended max
    Suspension Correction 490mm axle to crown
    Recommended Rotor 160mm

    2009 - end of production
    Seatpost 27.2mm diameter, 400mm length
    Seatpost Clamp 29.6mm
    BB Shell Width 73mm
    Front Derailleur 28.6mm clamp, top pull, low mount (top swing)
    Rear Tire Clearance 2.4 recommended max
    Suspension Correction 480mm axle to crown
    Recommended Rotor 160mm


    I hope that helps!

    Cheers,
    Brett
    Niner Bikes
    Niner Bikes employee. http://www.facebook.com/pages/Niner-...3652275?ref=ts
    Front Range Forum Moderator

  3. #3
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    Brett, thanks for the great info!

    BTW, is there an easy way to tell between the different frames besides whipping out a caliper, such as frame color, etc.?

  4. #4
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    Quote Originally Posted by shinbone View Post
    Brett, thanks for the great info!

    BTW, is there an easy way to tell between the different frames besides whipping out a caliper, such as frame color, etc.?
    Shinbone,

    I responded to your PM. For historical and future searches on this subject:

    Serial numbers indicate production date years and the week they were made. The first set of numbers is the year the frame was built. The next set is the production week. For instance, The MCR9 will say "PY" as the first letters, followed by something like "09190123" following. So this particular frame was produced in 2009 on the 19th week.
    Niner Bikes employee. http://www.facebook.com/pages/Niner-...3652275?ref=ts
    Front Range Forum Moderator

  5. #5
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    Brett - Thanks for the info in your PM. And, thanks for the info on decoding the serial number. That is super helpful when shopping used.

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