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NinerAIR 9
RDO 3-Star GX Eagle Mountain Bike


Item # NNR99AH

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  • Sand/Orange, L ($4,000.00)
  • Sand/Orange, M ($4,000.00)
  • Satin Carbon/Silver, L ($4,000.00)
  • Satin Carbon/Silver, M ($4,000.00)
  • Satin Carbon/Silver, XL ($4,000.00)
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Item # NNR99AH

Why We Like The AIR 9 RDO 3-Star GX Eagle Mountain Bike

We love our post-work rides in the mountains and, more often than not, we're turning to Niner for our newest mountain bikes. The brand is devoted to upping their game when it comes to mountain biking and, although we also covet Niner's gravel rigs, we can't get enough of the AIR 9 RDO 3-Star GX Eagle Mountain Bike. The Air 9 is Niner's flagship carbon fiber hardtail, which makes for an efficient and compliant frame no matter where you're riding. Its design is an iteration of the RKT 9 RDO, but more refined and overtly fast. The Air 9 is Niner's classic 29er carbon hardtail, and it delivers outstanding performance whether your racing to the finish line or riding away your afternoons. Sleek tubes along the length of the cockpit and seatstays are slender and slightly curved for a smooth ride that doesn't quit, and a 27.2mm seatpost offers rearward flex to further dampen rough bumps on the trail. We expect nothing but top quality riding from the Air 9's popular 3-star SRAM GX Eagle build, which offers outstanding handling and control.

  • Niner's flagship carbon fiber hardtail for mountain biking
  • Versatile and durable while offering outstanding performance
  • Sleek tubes and slender seatstays keep the ride smooth
  • A 27.2mm seatpost provides rearward flex for dampening bumps
  • PF30 bottom bracket shell offers plenty of drivetrain options
  • 3-Star SRAM GX Eagle build, Air 9 RDO frame and fork fully expressed

Tech Specs
Frame MaterialNiner RDO carbon fiber
ForkFox 32 SC Float Factory Evol Fit 4
Front Travel100mm
HeadsetNiner Integrated SHIS Description IS42/28.6|IS52/40
Shifters[rear] SRAM GX Eagle 12-speed
Rear DerailleurSRAM GX Eagle 12-speed
CranksetSRAM Descendant 7k Eagle Dub
Chainring Sizes32t
Crank Arm Length[medium] 175mm
Bottom BracketSRAM Dub PF30
Bottom Bracket TypeSRAM DUB PF30
CassetteSRAM Eagle XG 1275
Cassette Range10-52t
ChainSRAM GX Eagle 12-speed
BrakesetSRAM G2 R
Brake Typecenterlock disc
HandlebarNiner Flat Top RDO
Handlebar Width[medium] 780mm
GripsNiner Grrrips
StemNiner alloy stem
Stem Length[medium] 80mm
SaddleNiner custom with CR-MO rails
SeatpostNiner carbon seatpost (400mm)
Seat Collar31.8mm
WheelsetDT Swiss X 1900 spline 25
HubsDT Swiss 370
Front Axle15 x 110mm
Rear Axle12 x 148mm
Tires[front] Schwalbe Racing Ray Evo Super Terrain, [rear] Schwalbe Racing Ralph Evo Super Terrain
Tire Size2.35in
Pedalsnot included
Recommended Usetrail
Manufacturer Warranty5 years

120mm Travel Fork

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Actual Weight


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