Niner AIR 9 29 - 2-Star - Silver-Baja Blue - 2021

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keyboard_arrow_right Description

Niner AIR 9 29 - 2-Star - Silver-Baja Blue - 2021


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, poppy and peppy, the AIR 9 has plenty of stiffness to get you up to speed when you stomp on the pedals.  

[R]evolution geometry puts the rider in the sweet, balanced spot on the bike. The roomy cockpit has a comfortable reach for short stem lengths, giving you quick handling and plenty of maneuverability to blast through rock gardens and cut hard corners. The steep 74-degree seat angle gets you centered over the BB for climbing and pairs nicely with the short 430mm chainstay length for supreme pedaling efficiency.. And of course, the slack, 68-degree head tube angle and long wheelbase contribute stability and self-confidence when you’re dropping into the steepest lines.

Hit the trail big with the 2-Star SRAM SX build, without a big hit to your wallet. Thanks to SRAM's outstanding SX Eagle drivetrain, you can bring every ounce of AIR 9 performance to bear at an affordable price level.  


  • 6061 Aluminum Frame: Hydroformed aluminum blends stiffness and comfort in a durable package. 
  • Race Face bar and stem: for outstanding performance and durability
  • SRAM SX Eagle drivetrain: wide range 1x gearing to tackle all obsticles
  • Marzocchi Bomber Z2 Rail suspension fork: 120mm of perfectly tuned suspension 
  • Niner Alloy wheels (Boost Spacing)
  • Lifetime Warranty: Ride, race, rally with confidence. Niner has you covered with warranty service, small parts, and a support team that actually answers the phone. Read more here >
  • Biocentric 30: BioCentric bottom bracket system gives you the freedom to easily go single-speed or geared.

keyboard_arrow_right Specifications

  • Frame Material Aluminum
  • Frame Material Details Hydroformed 6061-T6 welded aluminum, molded chainstay protection
  • Rear Travel Hardtail
  • Rear Shock None
  • Fork Marzocchi Bomber Z2, RAIL damper, 44mm offset
  • Fork Travel 120mm
  • Head Tube Diameter Tapered, 1.125" top, 1.5" bottom
  • Headset Niner Integrated, IS42/28.6 upper, IS52/40 lower
  • Handlebar Race Face Aeffect R, 780mm width, 20mm rise, 35mm clamp diameter
  • Stem Race Face Aeffect R, 40mm length, 35mm bar clamp
  • Grips Niner Grrrips, lock-on, soft compound
  • Brakes SRAM Level, 2-piston, SRAM G2CS rotors (180mm front, 160mm rear)
  • Brake Levers SRAM Level
  • Drivetrain 1x
  • Shifters SRAM SX Eagle, 12-speed
  • Front Derailleur None
  • Rear Derailleur SRAM SX Eagle, 12-speed
  • ISCG Tabs None
  • Chainguide None
  • Cranks SRAM X1 1000 Eagle DUB
  • Chainrings SRAM X1 1000 Eagle, 32 tooth
  • Bottom Bracket SRAM DUB, PF30 PressFit
  • Pedals None
  • Chain SRAM SX Eagle, 12-speed
  • Cassette SRAM SX Eagle PG-1210, 12-speed, 11-50 tooth
  • Rims Niner alloy wheelset, 30mm inner width
  • Hubs Niner alloy wheelset, 110x15mm Boost front, 148x12mm Boost rear with HG driver
  • Spokes Niner alloy wheelset
  • Tires Schwalbe Nobby Nic, Evo, Super Trail, TLE, Addix Speedgrip, 29" x 2.6" (front), 2.35" (rear)
  • Saddle Niner Custom, CrMo rails
  • Seatpost Niner alloy, 370mm length
  • Seatpost Diameter 30.9mm
  • Seatpost Clamp Single bolt, 34.9mm
  • Rear Dropout / Hub Dimensions 148x12mm Boost
  • Max. Tire Size 29" x 2.4" or 27.5" x 3.0"
  • Bottle Cage Mounts Two inside front triangle
  • Colors Metallic Silver/Blue
  • Warranty Lifetime frame, 5 years Niner components, 1 year paint/decals
Top Tube Length 570mm 585mm 603mm 627mm 652mm
Head Tube Angle 68° 68° 68° 68° 68°
Head Tube Length 100mm 100mm 110mm 125mm 145mm
Seat Tube Angle 74° 74° 74° 74° 74°
Seat Tube Length 356mm 394mm 419mm 483mm 533mm
Bottom Bracket Height 52mm drop 52mm drop 52mm drop 52mm drop 52mm drop
Chainstay Length 427mm 427mm 427mm 427mm 427mm
Wheelbase 1102mm 1117mm 1136mm 1162mm 1189mm
Standover 698mm 729mm 748mm 800mm 841mm
Reach 395mm 410mm 425mm 445mm 465mm
Stack 610mm 610mm 620mm 634mm 652mm

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