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Niner
Air 9 RDO 5-Star XTR 1x Complete Mountain Bike - 2016

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Your ride has arrived.

When buttery smooth trails transition to the rough, it's nice to have a little bit of squish up front to soften the ride. For those of us who love the adrenaline rush of deftly navigating rock gardens and live for a big dose of hardtail speed, Niner brings the 2017 Niner Air 9 RDO 5-Star XTR 1x Complete Mountain Bike to the table. With tweaked geometry and boosted axles, this whip is ready to rip. As the name implies, this build sits at the top of the Niner pyramid, kitted out with Shimano's top-end XTR one-by drivetrain and hydraulic brakes, a show-stealing RockShox RS-1 fork, Niner's carbon fiber RDO post, and a set of smooth rolling carbon fiber hoops wrapped in versatile Maxxis Ikon tires.


The most notable changes to the frame include a lower handlebar height, giving the Air 9 a nudge towards the venerable RKT 9 RDO's aggressive positioning. It has a longer cockpit and slacker head tube, making for a frame that handles deftly on knife-edge lines and jumps the second you need it to. Compared to the previous Air 9, the chainstays scrunched in by 4mm to 435mm for lightning fast acceleration and nimble handing without crossing over into jumpy, squirrely territory.


The new Air 9 RDO also sizes down its seatpost diameter to 27.2mm to take advantage of that little bit of extra flex and resulting comfort found in a narrower post. Niner pushes this benefit to the max by pairing this frame with its RDO Carbon Fiber Post, which is specifically trail-tuned to provide additional flex to soften the ride.


Out back, this year's model now boasts a 12 x 148mm Boost axle width, keeping in line with current trends for wider axles and stiffer wheelsets. Niner also tucks the brake caliper mounts on the chainstay, neatly within the rear triangle. This makes sense from a frame building standpoint, as the seatstay is generally the burlier of the two rear stays and the placement protects the caliper somewhat in the event of a crash. We also think that particular placement just looks better than an ungainly bump hovering above a seatstay.


As with Niner's other RDO offerings, the Air 9 RDO is constructed using Niner's Carbon Compaction System (CCS), which gives Niner complete control over tube wall thickness across the frame. This makes for tube walls that are virtually perfect, reduces the amount of materials required, and eliminates excess resin build-up. The result is a claimed 10% weight reduction, which is a nearly unheard of leap between model years.


Frame Material
carbon fiber
Suspension
hardtail
Fork
RockShox RS-1 Solo Air
Front Travel
100 mm
Headset
1-1/8 - 1-1/2 in Cane Creek IS42/IS52
Shifters
Shimano XTR M9000 11-speed I-Spec II
Front Derailleur
n/a
Rear Derailleur
Shimano XTR M9000 GS 11-speed Shadow Plus
Crankset
32 t Shimano XTR M9020
Bottom Bracket
Shimano XTR BB93
Cassette
11 - 40 t Shimano XTR M9000
Chain
Shimano XTR HG-900 11-speed
Brakeset
Shimano XTR M9020 Trail
Brake Type
hydraulic disc
Rotors
[front] 180 mm Shimano RT86 Ice Tech, [rear] 160 mm Shimano RT86 Ice Tech
Handlebar
Niner Flat Top RDO
Handlebar Width
710 mm
Grips
Niner Grrrips lock-on
Stem
Niner RDO
Saddle
Niner Custom with Ni-Cro Ti Rails
Seatpost
Niner RDO
Seatpost Diameter
27.2 mm
Seat Collar
31.8 mm
Wheelset
Niner Carbon XC
Hubs
[front] SRAM PS 110x15mm
Front Axle
15 x 110mm Boost
Rear Axle
12 x 148mm Boost
Tires
Maxxis Ikon 3C/EXO/TR
Tire Size
[front] 29 x 2.35 in, [rear] 29 x 2.20 in
Pedals
not included
Recommended Use
cross country
Manufacturer Warranty
5 years on frame

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