Niner AIR 9 2-Star Hardtail Mountain Bike (Silver) (XS)

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Part#: 03-520-22-02-10
Niner Hardtail Mountain Bikes
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Price: $2,099.00
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Niner AIR 9 2-Star Hardtail Mountain Bike Description:

The Air 9 aluminum hardtail blends the agility and efficiency of a pedal-friendly XC bike with the versatility, toughness, and capability of a rowdy trail rig. Lightweight and snappy, the AIR 9 has plenty of stiffness to get you up to speed when you stomp on the pedals and easily flies up hills. SRAM SX 12-speed drivetrain and the Bomber front suspension deliver all the fun without the big hit on the wallet. Hydroformed aluminum tubing and trail-taming 29" wheels deliver a performance ride for the mountain biker looking to up their trail game.


Features:

  • Hydroformed 6061 aluminum frame blends stiffness and comfort in a durable package
  • Race Face bar and stem deliver outstanding performance and durability
  • SRAM SX Eagle drivetrain provides a wide range of gearing to tackle all obstacles
  • Marzocchi Bomber Z2 Rail suspension fork with 120mm of perfectly tuned suspension
  • 29" Niner Alloy wheels with Boost spacing for a stable predictable ride
  • Tubeless ready wheels and tires increase traction and reduce flat tires
  • Ready when the time comes to add a dropper seatpost with factory-installed routing
  • BioCentric 30 bottom bracket system gives you the freedom to easily go single-speed or geared

Specifications:

  • Frame: Hydroformed Welded 6061-T6 Aluminum (12 x 148mm)
  • Fork: Marzocchi Bomber Z2 Rail (120mm Travel) (15 x 110mm) (44mm Offset) (120mm Travel)
  • Headset: Niner Integrated (IS42/28.6 | IS52/40)
  • Handlebar: Race Face Aeffect R (35mm Clamp) (20mm Rise) (780mm)
  • Grips: Niner (Soft Compound)
  • Stem: Race Face Aeffect R (35mm Clamp) (40mm Length)
  • Brake Levers: SRAM Level
  • Rotors: 180mm (Front), 160mm (Rear)
  • Brakes: SRAM Level (Hydraulic Disc) (2-Piston Caliper)
  • Shifter: SRAM SX Eagle (12-Speed)
  • Rear Derailleur: SRAM SX Eagle (12-Speed)
  • Crank: SRAM X1 1K Eagle DUB (32T) (XS/S/M/L: 170mm, XL: 175mm)
  • Bottom Bracket: SRAM DUB PF30
  • Cassette: SRAM PG1210 (11-50T)
  • Chain: SRAM SX Eagle (12-Speed)
  • Pedals: -
  • Saddle: Niner Custom w/ Chromoly Rails
  • Seatpost: Niner RDO Alloy
  • Rims: Niner Alloy (30mm Inner Width) (Tubeless Ready)
  • Front Hub: Niner Alloy
  • Rear Hub: Niner Alloy
  • Spokes: Steel J-Bend
  • Front Tire: Maxxis Minion DHF (29 x 2.5") (Tubeless)
  • Rear Tire: Maxxis Rekon (29 x 2.4") (Tubeless)
  • Model Year: 2021
  • Color: Silver
  • Weight: -

This product was added to our catalog on June 28, 2022

Eric S
Verified Owner
Thursday, Mar 31 2022 (about 2 years ago)
Niner AIR 9 2-Star Hardtail Mountain Bike (Silver) (M)
Received the bike today. Definitely a quality build, especially at this price point weight. I can't think of any other hardtail with this component quality and low weight under $2K. I ordered the M, despite being 5' 7" (a Small, per the Niner chart). It looks like that was a good decision, as the geometry still feels tight, especially in reach.
Fernando Martinez
Verified Owner
Sunday, Dec 19 2021 (about 3 years ago)
Niner AIR 9 2-Star Hardtail Mountain Bike (Silver) (S)
Awesome bike, love it.

HOWEVER, buyer beware, I serviced the stock fork it came with and it had NO Dust Wipers inside the fork. Glad I only put about 3 hours on the fork before I decided to check the oil levels and Dust Wipers.

Also the star nut in the steerer tube was installed a little sideways. Otherwise great bike.
Jeff Wright
Verified Owner
Thursday, Feb 4 2021 (about 3 years ago)
Niner AIR 9 2-Star Hardtail Mountain Bike (Silver) (XS)
A beautiful build with quality components at an excellent price point. Niner has stayed true to its roots with a functional cross-country hardtail that is ready for the singletrack, gravel roads, fire roads, and more.

Heads up if you are buying the XS frame, I purchased this for my son who is 5 feet tall, the seat tube is curved which does not allow you to insert the seat post more than 5.5 inches so be ready to break out the hack saw or order a shorter seat post until the smaller rider can use the Niner alloy seat post that comes with the full build.

I highly recommend Niner as a brand and the Air 9 as an amazing full build hardtail!
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Sizing Recommendations for Riders Who Fall Between Sizes:

  • Sizing down will provide a more maneuverable ride while sizing up will provide more stability
Rider Height (Feet)Rider Height (Meters)
XS5' - 5'5"1.53 - 1.65m
S5'3" - 5'9"1.6 - 1.75m
M5'8" - 6'1.73 - 1.83m
L5'11" - 6'3"1.8 - 1.91m
XL6'3" - 6'7"1.91 - 2.01m

Note: All sizing recommendations are provided by the manufacturer and may differ for each rider.

Geometry:


Note: Geometry chart is for 120mm of fork travel
MetricXSSMLXL
(A) Top Tube Length570mm585mm603mm627mm652mm
(B) Seat Tube Length356mm394mm419mm483mm533mm
(C) Chainstay Length Actual430mm430mm430mm430mm430mm
(D) Horizontal Chainstay427mm427mm427mm427mm427mm
(E) Front Center678mm693mm711mm737mm764mm
(F) Wheelbase1102mm1117mm1136mm1162mm1189mm
(G) Bottom Bracket Drop52mm52mm52mm52mm52mm
(H) Headtube Length100mm100mm110mm125mm145mm
(I) Headtube Angle68.0°68.0°68.0°68.0°68.0°
(J) Seat Tube Angle74.0°74.0°74.0°74.0°74.0°
(K) Stand Over Height698mm729mm748mm800mm841mm
(L) Reach395mm410mm425mm445mm465mm
(M) Stack610610mm620mm634mm652mm
ImperialXSSMLXL
(A) Top Tube Length22.4"23.0"23.7"24.7"25.7"
(B) Seat Tube Length14.0"15.5"16.5"19.0"21.0"
(C) Chainstay Length Actual16.9"16.9"16.9"16.9"16.9"
(D) Horizontal Chainstay16.8"16.8"16.8"16.8"16.8"
(E) Front Center26.7"27.3"28.0"29.0"30.1"
(F) Wheelbase43.4"44.0"44.7"45.8"46.8"
(G) Bottom Bracket Drop2.05"2.05"2.05"2.05"2.05"
(H) Headtube Length3.9"3.9"4.3"4.9"5.7"
(I) Headtube Angle68.0°68.0°68.0°68.0°68.0°
(J) Seat Tube Angle74.0°74.0°74.0°74.0°74.0°
(K) Stand Over Height27.5"28.7"29.5"31.5"33.1"
(L) Reach115.5"16.1"16.7"17.5"18.3"
(M) Stack24.0"24.0"24.4"24.9"25.7"
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