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Niner Air 9 Frame 2013

Item #: FR228A00
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USD$469.99 45% off USD$849.00 msrp
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Niner Air 9 Frame

The Air 9 is back, and just as fast and handsome as it ever was! Being Niners geared-only light alloy racing hardtail, the Air 9 has received some upgrades over the years. The Niner Air 9 alloy frame now utilizes hydroformed tubing throughout as well as a tapered headtube and a PF30 bottom bracket shell. To some this may not sound like much, but for those who truly understand the benefits of bigger and lighter tubing, these minor upgrades almost make the Air 9 feel like a completely new bike.

Tapered headtubes are becoming an industry standard in both XC and AM bikes. A tapered steerer tube measurably reduces fork deflection which increases steering precision. Bikes with a tapered headtubes are able to take advantage of newer tapered forks or can even use a traditional 1 1/8” straight steerer tube with use of a reducing headset (purchased separately). Same goes for the PF30 bottom bracket shell: the rider can choose to use a 30mm spindle crankset or use the 24mm spindle crankset they already have in their spare parts pile.

The Air 9 employs hydroformed tubing in the toptube, downtube, headtube, chainstays and seatstays. This allows the manufacture to shape tubes, control wall thickness, and optimize strength and stiffness in key areas. The combination of a tapered headtube and a hydroformed toptube and downtube leaves a larger surface area for welding which results in a much stronger front end, ultimately giving the rider a much more stable feel and better control. The same goes for the rear end thanks to the hydroformed chain and seat stays along with the PF30 bottom bracket shell; this creates a stiff rear end to keep your line nice and straight down the bumpiest of terrain.

Niner Air 9 Frame Features

  • 73mm PF30 BB width
  • PF30 BB adaptable to threaded via adapters
  • 31.6mm seat post size, 400mm length recommended
  • 34.9mm front derailleur, high mount, top pull
  • 34.9mm seat collar size
  • 1.125”-1.5” tapered head tube with integrated (Campy style) headset (headset included) Cane Creek standard description: IS42/28.6|IS52/40
  • Small frame has one bottle mount inside the front triangle. Medium, large and XL have two bottle mounts inside the front triangle
  • Replaceable derailleur hanger
  • 135mm QR rear spacing
  • Can fit up to a 2.4” tire (tire size varies by brand, some tires may not fit)
  • Compatible with standard 3x chainring systems
  • SRAM recommended 2x chainrings: 26/39T or lower
  • SRAM XX1 recommended max chainring: 34T. Q-Factor: 168mm
  • SHIMANO XT recommended 2x chainrings: 28/40T or lower
  • SHIMANO XTR 2x is not recommended. Both versions (40t/48.8mm chain line and 38t/46.6mm chain line) position the large chainring in a way that it may contact the frame.

Note: The Raw color frame is the old version of the Air 9 frame and features a 1 1/8" straight headtube and traditional English threaded bottom bracket.

Geometry (80mm fork)
Size Small Medium Large Extra Large
Effective Top Tube Length 587mm 603mm 622mm 641mm
Seat Tube Length 394mm 419mm 483mm 533mm
Head Tube Length 105mm 110mm 125mm 145mm
Head Angle 71° 72° 72° 72°
Seat Angle 74° 74° 74° 74°
BB Drop 62mm 62mm 62mm 62mm
Front Center 650mm 656mm 675mm 695mm
Wheel Base 1082mm 1088mm 1107mm 1127mm
Chain Stay Length 439mm 439mm 439mm 439mm
Reach 414mm 428mm 443mm 457mm
Stack 600mm 610mm 624mm 643mm
Standover Height 719mm 739mm 790mm 831mm

Geometry (100mm fork)
Size Small Medium Large Extra Large
Effective Top Tube Length 590mm 607mm 626mm 645mm
Seat Tube Length 394mm 419mm 483mm 533mm
Head Tube Length 105mm 110mm 125mm 145mm
Head Angle 70° 71.1° 71° 71°
Seat Angle 73° 73° 73° 73°
BB Drop 54mm 54mm 54mm 54mm
Front Center 655mm 660mm 680mm 700mm
Wheel Base 1088mm 1094mm 1114mm 1134mm
Chain Stay Length 439mm 439mm 439mm 439mm
Reach 404mm 418mm 433mm 446mm
Stack 608mm 617mm 631mm 651mm
Standover Height 724mm 744mm 796mm 837mm
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by PowerReviews
Niner Air 9 Frame 2013

(based on 2 reviews)

Ratings Distribution

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Reviewed by 2 customers

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awesome in every way

By ewok dog

from el paso, tx

About Me Competitive Cyclist

Verified Buyer


  • Attractive Design
  • Durable
  • Lightweight


    Best Uses

    • Mountain Biking
    • Racing
    • Upgrade

    Comments about Niner Air 9 Frame 2013:

    product came in as expected
    lightweight and beautiful, as all niner frames

    • Was this a gift?:
    • No

    (1 of 1 customers found this review helpful)


    You need this...

    By Magua

    from IL

    About Me Avid Cyclist

    Verified Reviewer


    • Attractive Design
    • Durable
    • Lightweight


      Best Uses

      • Mountain Biking
      • Racing

      Comments about Niner Air 9 Frame 2013:

      Don't let this one get by at this price. This thing is light and fast. I've had mine for a year now, and I've loved every ride on it. It's also ridiculously light compared to other aluminum frames (and even some carbon frames too). It's a great climber and it can even hold its own in the technical sections.

      • Was this a gift?:
      • No

      Displaying reviews 1-2

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      Free Shipping Offer

      Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

      Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.