Free Shipping on orders over $50* 100% Guaranteed Returns
1-888-276-7130
  • Niner Air 9 RDO Mountain Bike Frame - 2018
  • Niner Air 9 RDO Mountain Bike Frame - 2018
  • Niner Air 9 RDO Mountain Bike Frame - 2018 3/4 Back
  • Niner Air 9 RDO Mountain Bike Frame - 2018 Derailleur Hanger
  • Niner Air 9 RDO Mountain Bike Frame - 2018 Rear Axle
  • Niner Air 9 RDO Mountain Bike Frame - 2018 Head Tube
  • Niner Air 9 RDO Mountain Bike Frame - 2018 Seat Stays
  • Niner Air 9 RDO Mountain Bike Frame - 2018 Seat Stays
  • Niner Air 9 RDO Mountain Bike Frame - 2018 Rear Axle
  • Niner Air 9 RDO Mountain Bike Frame - 2018 Top Tube
  • Niner Air 9 RDO Mountain Bike Frame - 2018 3/4 Back
  • Niner Air 9 RDO Mountain Bike Frame - 2018 Seat Tube
  • OptionsNiner -
  • Niner -
  • Detail Images - 3/4 Back
  •  - Derailleur Hanger
  •  - Rear Axle
  •  - Head Tube
  •  - Seat Stays
  •  - Seat Stays
  •  - Rear Axle
  •  - Top Tube
  •  - 3/4 Back
  •  - Seat Tube
NinerAIR 9
Air 9 RDO Mountain Bike Frame - 2018
Sale $1,299.00 - $2,000.00

Item # NNR006L

Find your size
|

Note: Actual inseam is not the same as pant inseam.How to measure

Recommended Size

We recommend a size in this bike.

EditMore details

Our size calculator is a starting point for finding the right size for you. To get personal advice talk to one of our fit experts at 1.888.276.7130 or chat now

Select options
  • Cancel
  • Select options
  • Satin Carbon/CMYK, S ($1,299.00)
  • Satin Carbon/CMYK, M ($1,299.00)
  • Satin Carbon/CMYK, L ($1,299.00)
  • Satin Carbon/CMYK, XL ($1,299.00)
  • Orange/Black, XS ($2,000.00)
  • Orange/Black, S ($2,000.00)
  • Orange/Black, M ($2,000.00)
  • Orange/Black, L ($2,000.00)
  • Orange/Black, XL ($2,000.00)
Compiling options for this bike.
  • 100% Guaranteed Returns
Item # NNR006L

Selected Option:

Add To Cartsave for laterSend via email
Compiling options for this bike.
It'll be just a moment...
Description

Bonafide rocketship for XC domination.

Destined for crushing miles of rolling singletrack and toeing the line on race day, the Niner 2018 Air 9 RDO Mountain Bike Frame delivers blistering acceleration and nimble handling for ripping across forest networks and blowing the doors off the competition. It's upgraded with Boost rear spacing and tweaked geometry for 2018, making it more capable at holding a line through rugged terrain without sacrificing its razor-like precision.

The most notable changes include a lower handlebar height, giving the Air 9 a nudge towards the venerable RKT 9 RDO's aggressive positioning. Paired with a longer cockpit and slacker head tube, this makes for a frame that handles deftly on knife-edge lines and jumps the second you need it to. Compared to the previous Air 9 the chainstays scrunched in by 4mm to 435mm for lightning fast acceleration and nimble handing without crossing over into jumpy, squirrely territory.

The new Air 9 RDO also sizes down its seatpost diameter to 27.2mm to take advantage of that little bit of extra flex and resulting comfort found in a narrower post. Out back, this year's model now boasts another different dimension; namely, a 12 x 148mm Boost axle width, keeping it in line with current trends for wider hubs and stiffer wheelsets. Niner also tucks the brake caliper mounts on the chainstay, neatly within the rear triangle. This makes sense from a frame building standpoint, as the seatstay is generally the burlier of the two rear stays and the placement protects the caliper somewhat in the event of a crash. We also think that particular placement just plain looks better than an ungainly bump hovering above a seatstay.

As with Niner's other RDO offerings, the Air 9 RDO is constructed using Niner's Carbon Compaction System (CCS), which gives Niner complete control over tube wall thickness across the frame. This makes for tube walls that are virtually perfect, reduces the amount of materials required, and eliminates excess resin build-up. The result is a claimed weight loss of 10%, which is a nearly unheard of leap between model years.

The Air 9 RDO’s large bottom bracket area provides stiff, efficient power transfer and sure handling, with the added bonus of versatility when choosing your bottom bracket. Opt for the standard PF30 on a geared setup, or swap it out for Niner's separately sold BioCentric 30 bottom bracket cups to go singlespeed or for compatibility with your favorite 24mm spindle cranks.

The 2017 Niner Air 9 RDO Mountain Bike Frame is designed to pair with a 100mm travel fork for race-worthy, aggressive positioning or a 120mm fork for more upright, all-day trail fun.

  • Blistering rocketship for XC racing and riding
  • Modern XC racing geometry with improved handling
  • RDO carbon frame is exceptionally light and stiff
  • 12 x 148mm Boost axle spacing for rear end stiffness
  • Optimized for 100mm forks, also works with 120mm forks
  • 27.2mm seatpost for greater compliance on bumpy trails
  • Di2-compatible internal cable routing makes it futureproof
  • Clears up to 2.4in tires for added traction, bump compliance
Tech SpecsGeometry
Tech Specs
Frame Material
RDO carbon fiber
Suspension
hardtail
Wheel Size
29in
Fork Travel
[recommended] 100 - 120mm
Bottom Bracket Type
73mm Press Fit 30 (Biocentric compatible)
ISCG Tabs
no
Cable Routing
internal
Front Derailleur Mount
34.9 high clamp
Derailleur Pull
bottom, side
Seatpost
disc
Seatpost Diameter
27.2mm
Seat Collar
31.8mm
Rear Axle
12 x 148mm Boost
Recommended Use
cross-country
Manufacturer Warranty
5 years
Geometry

100mm Travel Fork

 
XSSMLXL
a Seat Tube
14in15.5in16.5in19in21in
b Effective Top Tube
22.6in23.2in24in24.8in25.6in
c Stack
23.7in23.9in24.3in24.6in25in
d Reach
15.5in16in16.7in17.4in18in
e Stand Over
27.1in28.5in29.3in31.3in33in
f Head Tube
3.7in4.1in4.3in4.9in5.7in
g Head Tube Angle
70o70o70o70o70o
h Seat Tube Angle
73o73o73o73o73o
i Bottom Bracket Height
     
j Bottom Bracket Drop
2.28in2.28in2.28in2.28in2.28in
k Chainstay
17.1in17.1in17.1in17.1in17.1in
l Wheelbase
42.3in42.9in43.7in44.5in45.3in

120mm Travel Fork

 
XSSMLXL
a Seat Tube
14in15.5in16.5in19in21in
b Effective Top Tube
22.8in23.3in24.2in25in25.7in
c Stack
24in24.2in24.6in24.9in25.3in
d Reach
15in15.5in16.2in16.8in17.5in
e Stand Over
26.7in28.1in29in31in32.8in
f Head Tube
3.7in4.1in4.3in4.9in5.7in
g Head Tube Angle
69o69o69o69o69o
h Seat Tube Angle
72o72o72o72o72o
i Bottom Bracket Height
     
j Bottom Bracket Drop
2in2in2in2in2in
k Chainstay
17.1in17.1in17.1in17.1in17.1in
l Wheelbase
42.3in42.9in43.7in44.5in45.3in
Find your size

Reviews & Community

REVIEWS

Write a review

    Add a:
  • Photos
  • Videos

No file chosen

Rather attach a photo from your computer?

Familiarity:

Only jpg, jpeg, png, gif or bmp files please.

Submit ReviewCancel
Unanswered Question

Can this frame take a 27.5+ wheel/tire?

Light and Fast

  • Familiarity: I've put it through the wringer

Love it, great climbing machine and rides much softer than my Aluminum frame AIR 9. Have over 3,000 miles on this frame since I bought it and had it built up with some components from another bike and some new. Be sure you have a shop that knows about building Niner frames out since frame is best with 1X or 2X. I made the mistake of bringing over my existing 3X drive train and had some chain suck issues and ultimately had to do some minor repairs to the frame because of it. The pricing on this site beats NINER warranty pricing by a wide margin. I also purchased XT brakes and Industry Nine wheel set which gave me a tremendous upgrade to my WTB gear. One other warning which would have been handy to know is that Aluminum seat posts oxidize and freeze fast to the carbon frame which I am dealing with now. That is something that someone along the way should have mentioned.

Can this frame take a rigid fork or does it need a suspension fork? Thanks.

Hey Gregory!



Thanks for the question!



This frame can absolutely take a rigid fork, it is suggested to use the Niner specific fork for this frame though.

Please give me a call or shoot an email over if you have any other questions!



-Karissa

KLamb@backcountry.com

801-204-4567