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Niner Air 9 Frame

Item #: FR216A01
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Niner Air 9 Frame

Niner Air 9 Frame

When Niner set out to design an aluminum version of their highly praised and World Cup tested Air 9, they didn’t settle for mediocrity when it came to the quality of alloy. Knowing that any sort of compromise in frame material would do injustice to the proven geometry, Niner shaped the Air 9 using high end hydroformed alloy that benefits from the same decade of refinement and testing as its carbon fiber siblings.

To make Niner’s most economical cross-country race-frame both lighter and faster, this upgraded version integrates Niner's hydroformed tubing throughout. More than just a chic technology marketing term, hydroforming allows Niner to shape and hinder the tubes for optimized strength and stiffness in key areas, giving the ability to create beautifully tuned frames with precise ride characteristics. Hydroforming is found in the top tube, downtube, headtube, chainstays and seatstays, equating to an overall much lighter and stiffer ride feel that promotes more precise steering and a snappier power transfer. The rigid sides of the signature downtube and top tube shapes maximize torsional stiffness, with buttery smooth ride quality achieved through the flat sections on each tube, which act like leaf springs.

The Air 9 features a tapered headtube with an integrated headset. By allowing the use of the newest generation of 1.5” tapered steerer suspension forks and integrated headset, Niner creates the stiffest front end possible – leading to amazing steering precision as you carve corners and descend with confidence. Should you find yourself mashing the “I wish I had a little bit more travel” button; like a genie in a lamp, Niner has granted that wish by designing the new Air 9 to accommodate forks with up to 120mm of travel.

Employing a Pressfit 30 standard bottom bracket, the Air 9 perfectly mates its larger aluminum down tube with the larger BB shell to further optimize power efficiency, while allowing lighter, stiffer cranksets to be used. The new version of the Air 9 features a 12 x 142 rear drop out spacing with Maxle to maximize rear triangle stiffness, and allow easier maintenance.

Niner Air 9 Frame Features

  • High end Niner hydroformed alloy
  • Now featuring 12 x 142 spacing
  • With Niner’s RDO carbon fork, is a light integrated off road racing system
  • Niner’s world cup tested racing Geometry
  • Tapered head tube for front end stiffness, strength and steering precision
  • Low profile disc brake mounts
  • Replaceable rear derailleur hanger
  • Clearance for 2.4 tire
  • Improved cable routing is side swing FD compatible
  • New lighter Niner head badge
  • Compatible with standard 3x chainring systems
  • SRAM recommended 2x chainrings: 26/39 or lower
  • SRAM XX1 recommended max chainring: 38T 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
SPECIFICATIONS
Frame Niner Air 9 hydroformed alloy, 142 x 12 rear spacing
Fork n/a
Rear Shock n/a
Headset n/a
Shifters n/a
Front Derailleur n/a
Rear Derailleur n/a
Crankset n/a
Bottom Bracket PF30 compatible (not included)
Pedals n/a
Chain n/a
Cassette n/a
Brakes n/a
Wheelset n/a
Tires n/a
Handlebar n/a
Stem n/a
Grips Niner Grrrips
Seatpost n/a
Seat Clamp n/a
Saddle n/a
Intended Use XC, Endurance, Trail
Weight TBD

Note: Components are subject to change without notice.


GEOMETRY (mm) 100mm Fork
Size Extra Small Small Medium Large Extra Large
A: Seat Tube Length 381 394 419 483 533
B: Effective Top Tube 575 590 607 626 645
C: Stack 599 612 617 631 651
D: Reach 392 403 418 433 446
E: BB Height n/a n/a n/a n/a
F: BB Drop/Rise 54 54 54 54 54
G: Head Tube Length 95 105 110 125 145
H: Head Tube Angle 71° 71° 71° 71° 71°
I: Seat Tube Angle 73° 73° 73° 73° 73°
J: Standover Height 688 724 744 796 837
K: Chainstay Length 439 439 439 439 439
L: Wheelbase 1073 1088 1094 1114 1134
GEOMETRY (mm) 120mm Fork
Size Extra Small Small Medium Large Extra Large
A: Seat Tube Length 381 394 419 483 533
B: Effective Top Tube 578mm 593mm 610mm 629mm 648mm
C: Stack 606mm 619mm 624mm 639mm 658mm
D: Reach 382mm 392mm 408mm 422mm 436mm
E: BB Height n/a n/a n/a n/a
F: BB Drop/Rise 47mm 47mm 47mm 47mm 47mm
G: Head Tube Length 95 105 110 125 145
H: Head Tube Angle 70° 70° 70° 70° 70°
I: Seat Tube Angle 72° 72° 72° 72° 72°
J: Standover Height 692mm 729mm 749mm 802mm 843mm
K: Chainstay Length 439 439 439 439 439
L: Wheelbase 1079mm 1094mm 1100mm 1120mm 1127mm
4.8 / 5.0
14 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
11
3
0
0
0
Aluminum Rocketship
My first Niner was an EMD 9 that I bought in a large and always felt it was too big for me at 5'11". Since that time I had purchased (and still have) a RIP 9 RDO and JET9 in medium which were perfect. When the new AIR 9 came out, I decided to try a medium to replace my large EMD. I'm very happy I made the switch.

The air 9 frame is light, very attractive in the white and green (I just wish the white part was gloss and not flat), and has the Niner fit and handling that I've always loved. The handling is very fast and snappy and the bike feels like an ultralight rocketship on twisting singletrack. This bike loves smooth singletrask, technical climbs, pretty much whatever you can throw at it. I need to remind myself that I'm riding a hardtail on chunky descents and slow things down a touch because it jsut wants to go go go.

I'm running a 120mm fork on mine and I REALLY like the feel of the bike with a longer fork up front. it feels much more capable in the rough stuff than a 100mm.

The little touches on this frame are the best. Things like the full length rear derailleur housing, rear through axle, and stealth dropper post routing make it sweet. The one thing I'm not a fan of is the press fit style bottom bracket but I did some research and found the wheels manufacturing system that threads in and connects to itself in the middle and it works like a champ with my X0 cranks...no creaks and smooth spin.

I've got carbon bikes but I still love the classic aluminum hardtail. This bike puts a smile on my face every time I ride it because it just feels fast and light and pure.

PROS: Great Handling, Lightweight, Attractive Design
September 22, 2015
Location:
Fort Collins, Colorado
Love the frame!
Everything went great
August 24, 2016
Location:
Austin texas
Great hardtail.
I ride XC in the North-East. Lots of roots and rocks. Setup as 1x, 120mm. Handles really well and the 142x12 keeps the back end solid.
September 6, 2016
Location:
Canada
Ultra light xc frame
Good communication while on back order
May 16, 2016
Location:
erie, pa
Awesome frame
Bought this frame to replace a ritchey p29er. I've had the pleasure of owning and riding several hard tails in the past few years. Had a trek marlin, GT peace 9er, Cannondale Trail SL, and the ritchey P29er. My air 9 is definitely my favorite frame, with the ritchey being a close second. It's light and stiff, and the geometry is easy to whip around. Currently have it built up as a 1x11, although it would be great to run as a single speed as well. I'm 5'10" with a 32" inseam and a medium fits me perfectly.
October 11, 2016
Location:
Maryland
Nice, light hardtail frame
Shipped fast and everything was in good shape when it got here.
July 24, 2016
Location:
KS
Great frame and excellent value for the money
Delivery is Fast and well packed.
August 6, 2016
Location:
Doha, Qatar
Yes
Faster delivery
September 16, 2016
Location:
Laguna Hills
Light, Stiff, and priced right
I got a smoking hot deal on the frame because it was a close out. I was considering a carbon frame but decided to spend the extra money on a strong light wheel set. I would have liked internal cable routing but you can't have everything. It does have internal routing for a dropper post but I'm old school and can't see a need for it. Hopefully the pretty paint job holds up.
November 1, 2016
Location:
Irwin Pa
Awesome
Delivered in 2 days. Great service!
October 30, 2016
Location:
Twin Falls id

Q & A

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 8 questions Browse 8 questions and 32 answers
What is the seatpost diameter
Daniel on Oct 11, 2016
BEST ANSWER: Hi Daniel
31.6 diameter for the 2016 Niner Air 9 Frame. I have this frame and it states 31.6 right on the frame box that is in my living room.
Info and specs can be found on Niner Encyclopedia. Go to Ninerbikes.com. Tab on BIKES and then ARCHIVE and then click on Niner Encyclopedia.
Take care.
Rob
Does this frame come with the rear maxel?
Owen on Aug 30, 2016
BEST ANSWER: Yes, but I had to replace the one that came with it (maxel lite) with a SRAM ultimate maxel because the lite would come loose on a ride
Is this frame single speed compatible?
Justin on Jun 9, 2016
BEST ANSWER: Hi Justin,

Unfortunately, this frame is not single speed compatible. The only two Niner single speed compatible hardtail frames are the One 9 RDO, SIR 9 (BI201B00), the ROS 9 and the ROS 9 Plus. If you're interested in ordering one of these, please feel free to give our gear advisers a call at (888) 880-3811. I hope this helps!
I would also like to know if the Headset and Seatpost Collar are included?
Z on Jul 12, 2016
BEST ANSWER: just unpacked mine this afternoon. Came with the Maxle, seat collar, & integrated headset. Welds are not the greatest, but well worth the $365 I paid including shipping.
Does this frame have internal cable routing for a dropper post?
jp on Oct 28, 2016
BEST ANSWER: It is "stealth" compatible as the cable routes internal at the base of the seat-tube.
Pardon my complete ignorance, but what wheel size does the frame accommodate?
Ant on Aug 13, 2016
BEST ANSWER: 29"
Is the Praxis conversion BB (SKU: 73-3001 SHMN BB/PF30) compatible with Air9 frames (mine is a few years old)?
tcolbert on Aug 8, 2016
BEST ANSWER: Yes, as long as it is PF30
Does this bike come with the headset, YAWYD, and seat collar as shown on niner's website?
Piazzano on Jun 20, 2016
BEST ANSWER: Yes.

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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.