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Niner Air 9 Frame 2011

Item #: FR264I04
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The Air 9 is a super light geared-only (i.e. not single speed compatible) frame utilizing custom drawn Easton GX2 Scandium. Combining a truly advanced proprietary alloy with higher strength properties than 7005 series aluminum with the rare earth element of scandium, Easton achieved the impossible: a super lightweight tube with a compliant ride characteristic. Blending Easton’s tubing with custom drawn and shaped rear s-bend chain stays and seat stays, the Air 9 is a light, agile ripper of a frame that offers a surprising amount of comfort to the long haul.

Niner worked directly with Easton engineers to dial in the Air 9’s tube set, including the custom bent Niner down tube, which strengthens the head tube/down tube junction while simultaneously increasing fork crown clearance. Chain stays and seat stays have maximum tire clearance and heel clearance, and the top tube is radically sloped to allow for better stand-over height.

Whether you’re a racer or a fan of lightweight, high-tech bikes, the Air 9 delivers the goods in a stunning, wicked fast masterpiece that combines the best Easton tubing with Niner’s proven geometry and gives it to you with the hope that you will set it free.
  • Super-light geared race/XC hardtail
  • Custom drawn Easton GX2 Scandium tubeset
  • Sloping toptube and s-bend chainstays
  • Niners proven hardtail 29er geometry
  • Optimized for 80 to 100mm suspension forks
  • Exceptional tire and and heel clearance
  • Disc brake only
  • Replaceable derailleur hanger
  • 73mm bottom bracket shell
  • 1 1/8" standard head tube, requires 1 1/8" standard pressfit headset
  • Requires 34.9mm top swing, top pull front derailleur, 31.6mm seatpost
  • Requires 34.9mm seat collar(not included)
  • Standard QR dropouts
  • Approx. weight: 3.41 lbs (medium)
Geometry(80/100mm travel)

Effective Top Tube Head Tube Length
Head Angle Recommended Rider Height
S
23.1"/23.2"
3.1"
70.5/71.5
5'3" - 5'9"
M 23.75"/23.9"
3.5"
71.72
5'8" - 6'0"
L 24.5"/24.6"
4.1"
71/72
5'11" - 6'3"
XL 25.25"/25.4"
4.7"
71/72
6'3" - 6'7"

REVIEW SNAPSHOT®

by PowerReviews
Niner Air 9 Frame 2011
 
4.6

(based on 17 reviews)

Ratings Distribution

  • 5 Stars

     

    (12)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

94%

of respondents would recommend this to a friend.

Pros

  • Lightweight (8)
  • Attractive (4)

Cons

    Best Uses

    • Mountain biking (5)
    • Racing (5)
    • XC (4)
      • Reviewer Profile:
      • Avid cyclist (3)
      • Was this a gift?:
      • No (4)

    Most Liked Positive Review

     

    first 29er... Couldn't be happier

    Decided to go with a Niner air 9 as my first ever bike build and first ever 29er. Paired this frame with some American Classic wheels and Reba RL front fork and some good old...Read complete review

    Decided to go with a Niner air 9 as my first ever bike build and first ever 29er. Paired this frame with some American Classic wheels and Reba RL front fork and some good old xtr bits. Having used a clunky 30 pounds FS bike for over 5 years, I didn't really notice the slow acceleration of the 29er wheels. To be honest, it almost feels like cheating considering how much easier and less effort was required to go over technical sections. I love the Hardtail feel on this thing as it reminds me of my first HT I owned. I know on most 29ers the BB sits below the hub center which is the case for this frame. Only issue I had with this is when the pedals/crank (175mm) would clip an obstacle that my FS would have cleared. I am 5 10 and purchased a medium bike without any sizing issues.

    VS

    Most Liked Negative Review

     

    Niner Air 9 quality control

    I purchased a Niner Air 9 frame and the frame had an Easton die stamp product logo on the side of the top tube and an Easton die stamp product logo on the side of ...Read complete review

    I purchased a Niner Air 9 frame and the frame had an Easton die stamp product logo on the side of the top tube and an Easton die stamp product logo on the side of the down tube. The product description didn't mention anything about the frames being factory seconds, blemished or just close outs. The paint didn't even fill in the die stamps of the Easton logos. I would think product quality control would be a little better for this product. The die stamps are easily noticable. If Niner isn't going to cut the die stamps off the end of the tubes before they put them in the jig for welding the least they could do is put them on the bottom of the tubes so they would be less obvious. I decided to keep the frame rather than dealing with the hastle of boxing it back up and paying the shipping to return the frame. I figured that the cable routing will help hide the die stamp on the top tube. I figure that after riding the frame for a while the rock chips and dust will make the die stamp on the down tube less noticable as well. There is one bright side. If anyone asks you what Easton tubing is used on the frame you can read the Easton tubing product code die stamped below the Easton logo die stamp on the side of the down tube.

    Reviewed by 17 customers

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    5.0

    If they have any left, BUY ONE!!

    By Gonzo

    from Charlotte, N. Cackilacky

    About Me Avid Cyclist

    Verified Buyer

    Pros

    • Attractive Design
    • Durable
    • Easy To Install
    • Lightweight

    Cons

      Best Uses

      • Mountain Biking
      • Racing

      Comments about Niner Air 9 Frame 2011:

      Built one as my racer and another as my SS. Can't say enough good things about this frame. Super light, stiff, facing already done on bb and steerer tube.

      • Was this a gift?:
      • No

      (0 of 2 customers found this review helpful)

       
      2.0

      Niner Air 9 quality control

      By Mountain biker since 1989

      from Denver Colorado

      About Me Avid Cyclist

      Pros

      • Attractive Design

      Cons

        Best Uses

        • Mountain Biking

        Comments about Niner Air 9 Frame 2011:

        I purchased a Niner Air 9 frame and the frame had an Easton die stamp product logo on the side of the top tube and an Easton die stamp product logo on the side of the down tube. The product description didn't mention anything about the frames being factory seconds, blemished or just close outs. The paint didn't even fill in the die stamps of the Easton logos. I would think product quality control would be a little better for this product. The die stamps are easily noticable. If Niner isn't going to cut the die stamps off the end of the tubes before they put them in the jig for welding the least they could do is put them on the bottom of the tubes so they would be less obvious. I decided to keep the frame rather than dealing with the hastle of boxing it back up and paying the shipping to return the frame. I figured that the cable routing will help hide the die stamp on the top tube. I figure that after riding the frame for a while the rock chips and dust will make the die stamp on the down tube less noticable as well. There is one bright side. If anyone asks you what Easton tubing is used on the frame you can read the Easton tubing product code die stamped below the Easton logo die stamp on the side of the down tube.

        • Was this a gift?:
        • No
         
        5.0

        Excellent Product, Excellent Price

        By Ty

        from North East Pennsylvania

        About Me Avid Cyclist

        Verified Buyer

        Pros

        • Attractive Design
        • Geometry
        • Lightweight
        • Sale Price

        Cons

          Best Uses

          • Mountain Biking
          • Racing

          Comments about Niner Air 9 Frame 2011:

          This frame has it all. Stiff, light, beautiful.

          Component set is key to the total package, but this frame is the perfect foundation.

          I have no regrets and will be sticking with Niner for my future frame purchases.

          • Was this a gift?:
          • No
           
          5.0

          AWESOME FRAME

          By NinerBoy

          from Louisiana

          About Me Competitive Cyclist

          Verified Buyer

          Pros

          • Attractive Design
          • Lightweight
          • Scandium

          Cons

            Best Uses

            • Mountain Biking
            • Racing

            Comments about Niner Air 9 Frame 2011:

            I love the round tubes and the scandium frame. Ordered another frame since they NO longer make this one.

            • Was this a gift?:
            • No
             
            4.0

            Incredible Frame

            By J-Newbie Racer

            from Montana

            Verified Reviewer

            Pros

            • Color
            • Everything
            • GEOMETRY
            • Weight

            Cons

            • Paint

            Best Uses

            • Racing
            • XC

            Comments about Niner Air 9 Frame 2011:

            I built up this frame as an XC racing bike for my first season of racing. I never thought a bike could improve my riding this much. This bike can climb! no complaints whatsoever. I had a 29er before, but now I'm sold on Niner. They know how to design a bike with big wheels. XL frame built up with a SRAM drivetrain and WTB wheels (not tubeless... yet) and weighs in around 25lbs. Only weakness is that the paint chips easily. Doesn't matter too much, I like some character on my bikes. Plus they send the frame with a bottle of touch up paint.

             
            5.0

            well priced and strong frame!

            By Austin

            from oak ridge, n.c

            Pros

            • Descently Light
            • Strong
            • Well priced

            Cons

            • none at this time

            Best Uses

            • Cross country
            • Tight Singletrack

            Comments about Niner Air 9 Frame 2011:

            This is the first niner ive bought and cant speak good enough about it. I use it for just about any kind of riding and on any trail. - great product

             
            5.0

            first 29er

            By comotion59

            from Macon, Ga.

            Verified Buyer

            Comments about Niner Air 9 Frame 2011:

            I just got through building the frame. Planning my first hard ride 10/28/12. hope it is a great ride.

             
            5.0

            Great Frame To Build A Great HT Racer

            By Dirkable

            from Seattle, WA

            Verified Reviewer

            Pros

            • GEOMETRY
            • price
            • Stiffness

            Cons

              Best Uses

              • Climbing
              • Xc racing

              Comments about Niner Air 9 Frame 2011:

              I purchased my Niner Air 9 as a first true XC race bike and have not been dissappointed. My build includes a mix of X0 componenents, an XX race fork, and Stans Wheels -- medium sized frame total weight is just at 23 lbs. The result has been a bike that climbs really well and has been a great overall performer. My only challenge has been in tight technical race courses where an quick accleration here or there might help clear an obstical... Otherwise great!

               
              5.0

              Beautiful Welds and Finish

              By wannabee

              from michigan

              Verified Reviewer

              Comments about Niner Air 9 Frame 2011:

              Hard to believe how light this thing is and the finish is beautiful. I will be building it up over the winter with the carbon fork and on one midge bars. Can't wait to the 1st ride.

               
              5.0

              Light, stiff and well made.

              By Nate

              from Cambridge, MA

              Verified Reviewer

              Pros

              • Chased Bb
              • Light
              • Reamed And Faced Headtube
              • Stiff
              • Touch Up Paint

              Cons

                Best Uses

                • Mountain
                • Racing
                • XC

                Comments about Niner Air 9 Frame 2011:

                This frame (in Grey) is beautiful. High-end finish.

                The headtube, BB and disc tab were all prepped and ready to go. No need for chasing / facing. This amount of care is highly unusual for a mail-order frame. It results in a better assembly and, in turn, a better ride.

                Also love the little bottle of touch up paint.

                Frame rides as a scandium bike should. Fast and stiff. Compliant where it needs to be.

                Displaying reviews 1-10

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