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  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018
  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018 Front Brake
  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018 Crank
  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018 Suspension
  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018 Rear Brake
  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018 Seat Stays
  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018 Grip/Levers
  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018 3/4 Back
  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018 Rear Drivetrain
  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018 Fork
  • Niner 27.5+ 1-Star NX Complete Mountain Bike - 2018 Front
  • OptionsNiner -
  • Detail Images - Front Brake
  •  - Crank
  •  - Suspension
  •  - Rear Brake
  •  - Seat Stays
  •  - Grip/Levers
  •  - 3/4 Back
  •  - Rear Drivetrain
  •  - Fork
  •  - Front
NinerAIR 9
27.5+ 1-Star NX Complete Mountain Bike - 2018
Sale 10% Off$1,530.00 $1,700.00

Item # NNR006M

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Item # NNR006M
Description

Steamrolling trail machine.

Outfitted with the trail-smoothing ability of voluminous 2.8-inch tires, the Niner Air 9 27.5+ 1-Star NX Complete Mountain Bike provides unparalleled traction and bump compliance for a hardtail lacking the sophisticated suspension of its full-squish brethren. It's a great choice if you regularly encounter rocky trails and root-latticed forest networks that would normally buck you silly on older hardtails lacking plus-sized tires and a longer 120-millimeter fork. Ultimately, the Air 9 27.5+ is a solid upgrade if you're ditching your beat-up mountain bike from ten years prior or you're moving to more progressive trail geometry from a racier (i.e. stiffer and more uncomfortable) cross-country bike.

Niner starts this build with a hydroformed aluminum frame that creates a lightweight ride with excellent trail feel. Using a multi-staged hydroforming process, a straight tube is butted and mechanically formed in preparation of 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 Niner longer, but they're able to reduce weight and achieve a higher strength. Hydroforming uses molds and fluid pressures to form metal tubes into shapes ideally suited for certain locations along the bike frame, meaning Niner can dial in the bike's riding characteristics exactly how they'd like.

Besides using a hydroforming process to create a remarkably strong and relatively lightweight aluminum frame, the AIR 9 27.5+ comes with more progressive trail geometry that's a sigh of relief if you're transitioning from an overly stiff and twitchy handling cross-country bike. Considering its head tube angle of 68 degrees, it'll handle the rough stuff with greater composure and descend confidently without trying to chuck you over the bars. However, it's still highly efficient at pedaling back uphill and covering large swaths of terrain, seeing it's not as slack as many of the trail bikes on the market. Sub 17-inch chainstays (16.9 inches to be exact) breathe agility and cornering prowess into this trail bike, meaning you'll have a blast railing berms and finally clean those tricky uphill switchbacks.

This 1-Star NX build outfits the bike with 2.8-inch Maxxis Rekon+ tires that absolutely steamroll anything lying in their path, allowing you to ride over loose rocks, bumpy roots, and other impediments that would normally leave your wrists feeling like you're operating a jackhammer. Besides smoothing out the ride, plus-sized tires actually grip a lot better over loose soil and chunder, especially if you drop the tire pressure according to your body weight and local trail conditions.

Another notable features of this build includes a 120-millimeter RockShox Judy Gold Fork that offers more leeway for riding technical trails, especially if you're comparing it to hardtails with only 100-millimeters of front travel. Additionally, it's boasting a simplified SRAM NX 1x11 drivetrain, which provides plenty of usable gears with its larger cassette, even when you're pedaling up steep grades that would normally cause you to drop into your front granny ring.

  • 27.5+ hardtail confidently rolls over anything on the trail
  • Plus-sized tires smooth out rocks and provide gobs of traction
  • Modern trail geometry is more relaxed and confident on descents
  • Geometry remains efficient under power and nimble around corners
  • Compatible with Niner Biocentric 30 for converting to singlespeed
  • Internal dropper post routing makes it a solid platform for upgrades
  • RockShox Judy Gold 120mm fork provides ample travel for rough trails
  • SRAM NX 1x11 drivetrain ditches pesky front derailleurs for good
Tech SpecsGeometry
Tech Specs
Frame Material
aluminum
Suspension
hardtail
Fork
RockShox Judy Gold
Front Travel
120 mm
Headset
Niner Integrated Tapered (IS42/28.6|IS52/40)
Shifters
SRAM NX1, 11-speed
Front Derailleur
n/a
Rear Derailleur
SRAM NX1, 11-speed
Crankset
SRAM NX1 (32t)
Bottom Bracket
PF30
Cassette
SRAM PG 1130 (11 - 42t)
Chain
SRAM PC1110, 11-speed
Brakeset
SRAM Level
Brake Type
hydraulic disc
Rotors
Avid G2 Cleansweep, 180/160 mm
Handlebar
Race Face Aeffect R, 35 mm
Handlebar Rise
20 mm
Handlebar Width
780 mm
Grips
Niner Grrrips Lock-on
Stem
Race Face Aeffect R, 35mm clamp
Stem Length
50 mm
Saddle
Niner Custom TR with cromoly rails
Seatpost
Niner alloy, 370 mm
Wheelset
Niner Alloy
Front Axle
15 x 110 mm Boost thru-axle
Rear Axle
12 x 148 mm Boost thru-axle
Tires
Maxxis Rekon+ DC/EXO/TR
Tire Size
27.5 x 2.8 in
Recommended Use
trail
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
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