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  • Niner 29 2-Star Complete Mountain Bike
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NinerAIR 9
29 2-Star Complete Mountain Bike
$1,950.00

Item # NNR009R

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  • Black/Cyan, XS ($1,950.00)
  • Black/Cyan, S ($1,950.00)
  • Black/Cyan, M ($1,950.00)
  • Black/Cyan, L ($1,950.00)
  • Black/Cyan, XL ($1,950.00)
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Item # NNR009R
Description

AIR 9 29 2-Star Complete Mountain Bike

Today's full-suspension frames are pretty good, but nothing quite matches the efficiency and weight savings of a hardtail. If you're looking for a worthy racing partner or your trails are a bit more on the mellow side, Niner's AIR 9 29 2-Star Complete Mountain Bike is worth a look. It provides the excellent rollover of 29-inch wheels and modern geometry so you can spend time riding your bike instead of wrenching on shocks, pivots, and the like. Built up with a dependable kit, this bike is chock full of value and makes for an exceptional first bike or if you're looking to step up your ride or add another one to the stable.

Niner starts this build with a hydroformed aluminum frame for a lightweight ride with excellent trail feel. Using a multi-stage hydroforming process, a straight gauge tube is butted and mechanically formed in preparation for the hydroforming process. Up next is multi-stage hydroforming, which is a series of molds used in sequence to create complex shapes. Multiple steps might take longer but Niner is able to reduce weight and achieve higher strength. Hydroforming utilizes molds and fluid pressure to form metal tubes into the shapes best suited to the locations on the bike. These molds are created to the desired end shape, and tubes are placed in them while high-pressure hydraulic fluid is pumped in causing the tube to expand until it conforms to the desired shape.

Its RockShox Judy Gold RL Solo Air provides plush travel up front and offers plenty of adjustment for dialing it in for your terrain and riding style. The tapered headtube sits at 68-degrees and lets you hang it out on the descents and still have the ability to pick just the right lines on uphill switchbacks. The stubby 17-inch chainstays let you slalom through the tight trees and makes getting the front wheel up and over trail furniture and wheelies a breeze. Built up in this configuration, this Air 9 features SRAM's NX Eagle 1x11 drivetrain giving you the same wide range as SRAM's higher tier offerings. Should you feel the need to run additional gearing, the frame can accommodate a front side swing derailleur if bikepacking is in your future. Adding to the versatility, the PF30 bottom bracket shell can house Niner's BioCentric 30 for singlespeed use. This clean solution eliminates the need for adjustable dropouts, bolt-on hubs, and chain tensioners. Forget having to adjust for brakes every time you swap out cogs. The Boost 148 spacing lets the bike transform wheels and tires from the 29 on this build to a 27.5+ should you choose to do so. Have the maximum roll over and speed for racing with the 29's, or op for the traction, comfort, and flotation with the plus.

The Air 9's geometry is perfect for both hot laps after work or a multi-day bikepacking trip. Its fast rolling tires increase speed without sacrificing grip in the corners and simply rolls over rocks and roots. The frame has plenty of gets up and go and if you haven't been on a hardtail in a while, you'll quickly remember and appreciate the efficiency when climbing. A forged chainstay and bottom bracket junction increases drivetrain stiffness and offers ample tire clearance. Its Maxxis tires are 2.5 and 2.4-inch wide front and rear giving you plenty of volume to run them low for the maximum hookup. Lastly, an oversized Race Face bar and stem keep the responsiveness lit and offer plenty of leverage for positive handling.

  • A versatile aluminum hardtail from Niner
  • 29-inch tires cover ground quickly and grip
  • Progressive geometry yields agile and confident handling
  • Boost axle spacing affords 29x2.5 or 27.5x3.0 tires
  • SRAM NX Eagle 1x12 drivetrain provides a massive gear range
  • Rock Shox Judy fork gives 120mm of trail-taming travel
Tech SpecsGeometry
Tech Specs
Frame Material
aluminum
Fork
RockShox Judy Gold RL Solo Air
Front Travel
120mm
Headset
Niner IS
Shifters
SRAM NX Eagle
Rear Derailleur
SRAM NX Eagle
Crankset
SRAM NX EAGLE DUB
Chainring Sizes
32t
Bottom Bracket
SRAM DUB
Bottom Bracket Type
PF30
Cassette
SRAM NX PG1230
Cassette Range
11 - 50t
Chain
SRAM NX Eagle
Brakeset
SRAM Level
Brake Type
hydraulic disc
Rotors
SRAM G2CS [front] 180mm, [rear] 160mm
Handlebar
Race Face Aeffect R
Handlebar Rise
20mm
Handlebar Width
780mm
Grips
Niner Grrrips lock-on
Stem
Race Face Aeffect R
Stem Length
40mm
Saddle
Niner custom, Cr-Mo rails
Seatpost
Niner Alloy
Wheelset
Niner Alloy 29
Front Axle
15mm Boost
Rear Axle
12 x 148mm
Tires
[front] Maxxis Minion DHF 3C/EXO/TR, [rear] Maxxis Rekon 3C/EXO/TR
Tire Size
[front] 29 x 2.5in, [rear] 29 x 2.4in
Pedals
not included
Recommended Use
cross-country
Manufacturer Warranty
5 years on frame
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
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