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Niner Air 9 Frame 2012

Item #: FR256I00
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Niner Air 9 Frame 2012

Niner Air 9 Frame 2012

The Air 9 is Niners fast, light, geared-only alloy racing hardtail. This upgraded version integrates hydroformed tubing throughout. More than a cosmetic feature, hydroforming allows Niner to shape tubes and optimize strength and stiffness in key areas, giving the ability to create beautifully tuned frames with precise ride characteristics. You will find hydroforming in the toptube, downtube, headtube, chainstays and seatstays.

Because of the larger welding area created by the new tapered headtube, we are able to include a massive hydroformed downtube as well as a significantly larger diameter toptube, contributing to a much stronger frame. Chainstays, seat tube and seatstays also benefit from hydroforming via controlled wall thicknesses and enhanced butting profiles. This translates to a rear triangle that is tuned for stiffness, strength and vertical compliance – in other words, ideal ride feel.

The Air 9 features a tapered headtube with an integrated headset. By allowing for the use of the newest generation of 1.5” tapered steerer suspension forks and integrated headset, Niner create the stiffest front end possible – leading to amazing steering precision as you carve a corner and descend toward the finish line, with the same stack height as their original Air 9 model.

Additionally, the updated Air 9 now features anodizing friendly tubing, allowing folks to get a rugged and extra-light finish in a stealthy black with low profile logos.

Bottom line? A lighter, stiffer frame with better ride feel and improved steering results in better power transfer and an overall efficiency improvement. In other words, the updated Air 9 will win more races.

  • Custom hydroformed alumium alloy tubing for a carefully tuned ride
  • Tapered headtube for steering precision and stiffness
  • Niners proven hardtail 29er geometry
  • Optimized for 80 to 100mm suspension forks
  • Disc brake only
  • Press fit 30 bottom bracket for more weight savings
  • Replaceable derailleur hanger
  • Headset is included
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
4.8 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
4
1
0
0
0
Awesome Bike
Sweet frame! Responsive and light. Zooms up hills. Put a rigid carbon fork on and bike is under 20 lbs. Very nice

PROS: Lightweight, Attractive Design
November 15, 2013
Location:
San Diego, Ca
Fantastic frame
I can't say enough good things about this frame…it's amazing. It handles like a dream. I didn't build it specifically to be lightweight…but as I compare it to other bikes, it's ridiculous how light it really is.

PROS: Lightweight, Attractive Design, Durable

BEST USES: Mountain Biking, Racing
October 23, 2014
Location:
IL
424 dollars?!!
this is an incredible frame and an unbelievable buy! this is my most winningest frame by far and is only slightly less pretty than the colnago. i use the bike to race ss mtb and well as ss cx. itz built up with notubes wheels, shimano crank,thomson seatpost and a whiskey fork.

PROS: Lightweight, Durable, Easy To Install, Attractive Design

CONS: It's Not Carbon

BEST USES: Mountain Biking, Racing
March 24, 2014
Location:
bflo, ny
I love this frame
I bought this frame to build up a good solid bike I could ride for many years. I'm pretty new to mountain biking as I've spent most of my time in the saddle on the road. I rode this frame at Outerbike in Moab and absolutely loved it. I'm 5'8" and I could have gone with either a med or sm. After riding both sizes in Moab, I chose the sm frame as it just seeemed to be more responsive and did everything I wanted it to. I built it up with mainly Shimano XT parts. Nothing bad to say. Also Jenson had a smoken deal on this frame and I couldn't pass it up. I only gave this a four star rating as 5 would be perfect with no room for improvement. And nothing is perfect.

PROS: Lightweight, Durable, Attractive Design
November 7, 2013
Location:
Durango, CO
Great price and great service!!
Niner frame was looks great and I cant wait to rided the completed bike.
May 6, 2013
Location:
Baltimore, Md

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Get free shipping with your $50 purchase today when you choose Standard Shipping at 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

Due to manufacturer restrictions, this product cannot be shipped to the following locations:
  • Australia
  • Austria
  • Belgium
  • Brazil
  • China
  • Czech Republic
  • Denmark
  • France
  • Germany
  • Greece
  • Hong Kong
  • Ireland
  • Israel
  • Italy
  • Japan
  • Luxembourg
  • Malaysia
  • Mexico
  • Netherlands
  • New Zealand
  • Norway
  • Philippines
  • Poland
  • Portugal
  • Singapore
  • Slovenia
  • South Africa
  • Spain
  • Sweden
  • Switzerland
  • United Kingdom
  • United States, Puerto Rico
  • Venezuela

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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.