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Niner AIR 9 Carbon 2-Star Complete Bike - 2013

Out of Stock

Item # NNR0047

2013 This model is no longer in stock.

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Item # NNR0047

Description

Simple and fast.

Turnkey single speeds are plentiful, but most are only around to catch a ride on another mountain bandwagon. So, they're typically just heavy steel frames that're spec'd with budget build kits. But, the Niner Air 9 Carbon with the 2-Star Complete Bike kit is the complete opposite of that. Niner's been in the SS game since the beginning, and its high-tech chassis and choice parts are ready for SSWC shenanigans. Most importantly, though, it revels in the true, lightweight, and simple pleasure that these bikes are intended to provide.

The curvy Air 9 Carbon's foundation is constructed from a high modulus carbon fiber structure with optimized weaves, layups, and tube shapes. The fluid form is no accident, either. In fact, it's been purposefully designed to dampen chatter and guide impact forces to stronger parts of the frame. Accordingly, chain torque goes directly to the rear wheel via the reinforced bottom bracket shell and sturdy chainstays, yet trail vibrations are quelled by the swooping seatstays. From the strength- and precision-enhancing tapered head tube, to the internal cable routing and titanium protectors, the Air 9 Carbon checks all the boxes on your wishlist.

The Air 9 Carbon features Niner's exclusive Bio-Centric EBB technology and CYA Bottom Bracket system. This frees the Air 9 Carbon from the plethora of new bottom bracket standards, and it means that you can easily switch from single speed to gears. Through the use of press-fit inserts, the Air 9 Carbon can be set up for either Shimano or SRAM BB30, Shimano or SRAM BB92, or standard external cups. But, most important to single speed frames is the chain tensioning device -- in this case an eccentric design. Eccentric bottom brackets often present finicky maintenance headaches like constant creaking, ovalized shells, and stripped bolts. However, an essential design element of Niner's Bio-Centric system is that the cups lock to the bottom bracket shell's flange. This provides 360 degrees of positioning, while eliminating any chance for creak-causing dirt or debris to contaminate the interface. Also, it won't round out or suffer from the over-tightening issues of traditional EBB designs.

The 2-Star Complete build includes Niner's coveted RDO carbon fork with 15mm Maxel. Its monocoque design allows the oversized steerer tube to seamlessly integrate with the lowers. This creates a transition free of stress-prone bonds, as opposed to three-piece forks. Niner also dedicated extensive resources to optimizing the fork legs' weave in order to take full advantage of the damping characteristics of carbon. Impact energy is dispersed throughout the entire structure, suppressing trail vibrations without compromising steering precision.

The Air 9 Carbon rides on Sun Ringle Black Flag SS wheels with custom Niner graphics. They're wrapped in Schwalbe Nobby Nic 2.35in tires, and the rear is equipped with a 20T Niner Cogaliciuos. Spinning that cog is a KMC 710SL chain and a Truvativ Stylo crank with a 32T ring. At the other end of the force spectrum is a set of Avid Elixir 5's with a 180mm rotor up front and a 160mm rotor in back. Wrapping up the 2-Star build is a smattering of Niner alloy components, including the stem, handlebar, and seatpost that's been mated with a Niner-branded WTB Volt saddle.

The Air 9 Carbon 2-Star Complete Bike is available in the color White and four sizes from Small to X-Large.

Tech Specs

Frame Material:
carbon
Suspension:
hardtail
Rear Travel:
135 mm
Fork:
Niner RDO
Headset:
1.125 - 1.5
Bottom Bracket:
Niner CYA
Pedals:
not included
Cassette:
20 T Niner Cogaliciuos
Chain:
KMC 710SL
Handlebar:
Niner flat-top alloy
Stem:
Niner Alloy
Saddle:
WTB Volt
Seatpost:
Niner Alloy
Seat Collar:
34.9 mm
Wheelset:
Sun Ringle Black Flag SS
Tires:
Schwalbe Nobby Nic
Tire Size:
29 in x 2.35 in
Recommended Use:
mountain biking
Manufacturer Warranty:
5 years on frame

Geometry chart

Niner Bikes

Geometry Chart

 

Air 9 Carbon
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 16.1in 27.8in 4.2in 71.0 deg 74.0 deg 2.4in 17.3in 42.4in
M 16.5in 23.7in 24.0in 16.7in 28.6in 4.3in 72.0 deg 74.0 deg 2.4in 17.3in 42.7in
L 19.0in 24.0in 24.6in 17.3in 30.7in 5.0in 72.0 deg 74.0 deg 2.4in 17.3in 43.5in
XL 21.0in 25.2in 25.3in 17.8in 32.4in 5.7in 72.0 deg 74.0 deg 2.4in 17.3in 44.3in
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 15.7in 28.0in 4.2in 70.0 deg 73.0 deg 2.1in 17.3in 42.7in
M 16.5in 23.9in 24.3in 16.3in 28.8in 4.3in 71.0 deg 73.0 deg 2.1in 17.3in 43.0in
L 19.0in 24.6in 24.8in 16.9in 30.9in 5.0in 71.0 deg 73.0 deg 2.1in 17.3in 43.7in
XL 21.0in 25.4in 25.6in 17.4in 32.6in 5.7in 71.0 deg 73.0 deg 2.1in 17.3in 44.5in

Niner Air 9 Carbon Geo

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