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Niner AIR 9 RDO Carbon Mountain Bike Frame - 2014

$1,249.00 $1,799.00

Item # NNR0002 31% Off

5 5

Community Rating | 1 Review

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Item # NNR0002

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Description

Lighter than air.

While this frame shares the AIR 9 name with Niner's versatile carbon hardtail, that's about all they share. The AIR 9 RDO Carbon Mountain Bike Frame - 2014 is an entirely different animal, and the RDO designation, an acronym for "Race Day Optimized," clearly states this 29er's purpose — to place you on the podium. Niner eliminated all excess on this frame and focused solely on making it as light as possible. For example, the rear brake mounts are now cleanly located inside the stays, which reduces the amount of hydraulic line needed, while making the AIR 9 RDO look lean and mean. Also, this frame does not use Niner's CYA bottom bracket system. While the CYA is renowned for its versatility, it added complexity and heft to this purpose built race machine, so Niner went with the lighter PressFit30 interface instead. The RDO retains the clean internal cable routing and titanium chain-slap protectors found on the AIR 9 Carbon.

The AIR 9 RDO isn't just cosmetically and physically different; it's structurally different, too. At the core of every Niner frame is extensive computer-based finite element analysis, and here it’s used to develop a high modulus carbon fiber structure with optimized weaves, lay ups, and tube shapes to produce the lightest Niner to date. The RDO’s fluid form is no accident, and is designed to dampen chatter and guide impact forces to the stronger parts of the frame. Niner Air 9 RDO DetailChain torque goes directly to the rear wheel via the large bottom bracket shell and shapely chainstays, yet trail vibrations are quelled by the swooping seatstays. Niner ties the bottom bracket to the strength- and precision-enhancing tapered head tube via a large down tube to ensure the frame tracks true and responds to every input.

Niner recommends an 80 to 100mm suspension fork, or a rigid unit with a 470mm axle to crown length and 45mm offset. Perhaps not coincidentally, their award-winning carbon fork shares those exact dimensions. The tapered head tube comes equipped with a Cane Creek IS42/28.6 | IS52/40 integrated (Campy style) headset. You’ll need a 31.6mm seatpost and a high-mount, bottom-swing, bottom-pull front derailleur with a 34.9mm clamp. The rear triangle offers clearance for tires up to 2.4in. The AIR 9 RDO stays true to its XC nature in the brake department — 160mm rotors are the only option, and the caliper attaches via a post mount. Niner recommends a maximum chainring size of 39/26t for SRAM or 40/28t for Shimano for two-by applications to avoid interference issues. Niner does not recommend running Shimano XTR two-by cranksets to avoid the same interference issue. Any traditional triple setup will work fine. For those of you who intend on running a one-by drivetrain, such as SRAM’s XX1, the AIR 9 RDO will clear up to a 32t ring, with a 168mm Q Factor crankset.

Niner dresses the AIR 9 RDO Carbon Mountain Bike Frame is available in four sizes from Small to X-Large and in the colors Licorice Black or Niner Green.

Tech Specs

Frame Material:
carbon fiber
Recommended Fork Travel:
80 - 100 mm
Rear Axle:
135 mm quick-release
Replaceable Rear Derailleur Hanger:
yes
Head Tube Diameter:
1.125 x 1.5 in
Headset Included:
yes, Cane Creek
Bottom Bracket Type:
[not included] 73 mm PressFit 30
Front Derailleur Mount:
34.9mm clamp-on
Derailleur Pull:
top
Seatpost Diameter:
31.6 mm
Seat Collar:
34.9 mm
Cable Routing:
internal
Recommended Use:
cross country mountain biking
Manufacturer Warranty:
5 years limited

Geometry chart

Niner Bikes

Geometry Chart

 

Air 9 RDO
80mm Travel Fork
 Seat Tube
(c-t)

Effective Top Tube

(eTT)

Stack

(S)

Reach

(R)

Stand Over

Head Tube

(HT)

Head Tube Angle

(HTo)

Seat Tube Angle

(STo)

Bottom Bracket Drop

(BBD)

Chainstay

(CS)

Wheelbase
S 15.5in 23.1in 23.6in 16.3in 27.6in 4.2in 72.0 deg 74.0 deg 2.4in 17.3in 42.2in
M 16.5in 23.7in 24.0in 16.9in 28.4in 4.3in 72.0 deg 74.0 deg 2.4in 17.3in 42.8in
L 19.0in 24.5in 24.6in 17.4in 30.6in 5.0in 72.0 deg 74.0 deg 2.4in 17.3in 43.6in
XL 21.0in 25.2in 25.3in 18.0in 32.2in 5.7in 72.0 deg 74.0 deg 2.4in 17.3in 44.4in
100mm Travel Fork
 Seat Tube
(c-t)

Effective Top Tube

(eTT)

Stack

(S)

Reach

(R)

Stand Over

Head Tube

(HT)

Head Tube Angle

(HTo)

Seat Tube Angle

(STo)

Bottom Bracket Drop

(BBD)

Chainstay

(CS)

Wheelbase
S 15.5in 23.2in 23.9in 15.9in 27.8in 4.2in 71.0 deg 73.0 deg 2.1in 17.3in 42.4in
M 16.5in 23.9in 24.3in 16.5in 28.6in 4.3in 71.0 deg 73.0 deg 2.1in 17.3in 43.1in
L 19.0in 24.6in 24.8in 17.0in 30.7in 5.0in 71.0 deg 73.0 deg 2.1in 17.3in 43.8in
XL 21.0in 25.4in 25.6in 17.6in 32.4in 5.7in 71.0 deg 73.0 deg 2.1in 17.3in 44.6in

Niner Air 9 RDO Geo

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Here's what others have to say...

5 5

My go to bike for the past two years

  • Familiarity: I've put it through the wringer

The Air 9 RDO is a real deal, race-oriented hardtail. It loves to go fast. Unlike similar hardtail offerings from other companies, the Air 9 RDO holds up to serious everyday use. It is not a one season and done carbon frame, nor is it a race day only kind of bike.

I've ridden and raced nearly 10,000 km on this frameset and it's still looking great and holding up extremely well despite all of the hours. It's light, plenty stiff, and handles just about any terrain I've put it through - and that's been a lot over the past two seasons.

Choose a high quality PF30 BB (such as the Chris King PF30) to go with this frame and be sure to properly route your full length internal shifter housings so that you can maximize the performance of your shifting and minimize any service requirements specific to this frame with it's full length internal routing. It builds up looking super clean and you'll go for long periods of time without having to change cables and housing.

For XC racing and everyday riding you can't go wrong with the Air 9 RDO.



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