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Niner Air 9 Carbon Frame

Item #: FR216A02
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Niner Air 9 Carbon Frame

The Niner Air 9 Carbon is Niner’s latest iteration of the renowned Air 9 frame. Niner has proven year after year that they’ve got the 29er hardtail geometry down to a science, which they are demonstrating yet again with the new Air 9 Carbon. Although it’s technically not an RDO, it borrows the mold and several other features previously only seen on the Air 9 RDO frame.

The Air 9 Carbon features internal cable routing (the frame is Di2 ready and side swing front derailleur compatible), thinner tube profiles, smaller junctions, carbon molded headset races, a low profile disc brake mount, and a PF30 carbon bottom bracket shell. Niner decided to go with a PF30 bottom bracket shell for the Air 9 Carbon geared-only carbon hardtail. The PF30 bottom bracket shell allows for 24mm or 30mm spindle cranks to be installed, however this frame is not compatible with an EBB (hence ‘geared-only’).

To keep this horse tame, Niner continues to use tapered headtubes in order to maintain a stiffer front end to drastically improve the overall handling and control. Additionally, Niner also decided to go with a very sleek integrated headset that is lightweight, easy to install and maintain.

This version of the Air 9 Carbon is the first to feature a 12 x 142 rear hub spacing allowing a thru axle to be used as an added measure to increase the overall stiffness of the ride while shedding roughly 50 grams. Other improvements making their debut on the Air 9 Carbon include its 2.4” tire clearance versus its previous 2.35” clearance, as well as the lighter headbadge that sheds valuable grams without expensing the Niner charm.

The new Air 9 Carbon is a stellar frame that anyone can and will enjoy. Although it’s technically not ‘Race Day Optimized’, this bike is as much at home on the XC course as it is enjoying the scenery on your weekend loop. By providing their proven hardtail geometry in a lightweight carbon frame, Niner definitely knew what they were doing when they designed the new Air 9 Carbon.

Niner Air 9 Carbon Frame Features

  • Niner Carbon for strength, stiffness and ride quality
  • 142 x 12 rear spacing (over 50 grams lighter)
  • Tapered head tube for front end stiffness, strength and steering precision
  • PF30 Bottom Bracket
  • Low profile disc brake mount
  • Replaceable rear derailleur hanger
  • Clearance for 2.4” tire
  • New lighter Niner headbadge
  • Titanium chain drop and chain suck protection pieces
  • Compatible with standard 3x chainring systems
  • SRAM recommended 2x chainrings: 26/39 or lower
  • SRAM XX1 recommended max chainring: 32T Q-Factor: 168mm
  • SHIMANO XT recommended 2x chainrings: 28/40 or lower
  • SHIMANO XTR FC M9000 series recommended 2x chainrings: 28/38 or lower. XTR FC M980 series 2x chainrings not recommended
  • C5 Carbon warranty – 5 years

Note: White/Black sku image is for color illustration purposes only. Upon purchasing, you will be shipped only the frame.

Niner Air 9 Geometry (100mm Fork)
Size Extra Small Small Medium Large Extra Large
Effective Top Tube Length 575mm 590mm 607mm 626mm 645mm
Seat Tube Length 381mm 394mm 419mm 483mm 533mm
Head Tube Length 95mm 105mm 110mm 125mm 145mm
Head Angle 71.0° 71.0° 71.0° 71.0° 71.0°
Seat Angle 73° 73° 73° 73° 73°
BB Drop 54mm 54mm 54mm 54mm 54mm
Front Center 639mm 643mm 660mm 680mm 699mm
Wheel Base 1073mm 1088mm 1094mm 1114mm 1134mm
Chain Stay Length 439mm 439mm 439mm 439mm 439mm
Reach 392mm 403mm 418mm 433mm 446mm
Stack 599mm 612mm 617mm 631mm 651mm
Standover Height 688mm 724mm 744mm 796mm 837mm
Niner Air 9 RDO Frame Geometry (120mm Fork)
Size Extra Small Small Medium Large Extra Large
Effective Top Tube Length 578mm 593mm 610mm 629mm 648mm
Seat Tube Length 381mm 394mm 419mm 483mm 533mm
Head Tube Length 95mm 105mm 110mm 125mm 145mm
Head Angle 70° 70° 70° 70° 70°
Seat Angle 72° 72° 72° 72° 72°
BB Drop 47mm 47mm 47mm 47mm 47mm
Front Center 645mm 649mm 665mm 685mm 705mm
Wheel Base 1079mm 1094mm 1100mm 1120mm 1127mm
Chain Stay Length 439mm 439mm 439mm 439mm 439mm
Reach 382mm 392mm 408mm 422mm 436mm
Stack 606mm 619mm 624mm 639mm 658mm
Standover Height 692mm 729mm 749mm 802mm 843mm

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  • Slovenia
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  • South Africa
  • Spain
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  • Suriname
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  • Sweden
  • Switzerland
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  • Taiwan
  • Tanzania, United Republic Of
  • Thailand
  • Togo
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  • Uzbekistan
  • Vanuatu
  • Venezuela
  • Vietnam
  • Virgin Islands, British
  • Wallis and Futuna
  • Yemen
  • Zambia
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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.