2019 Niner

AIR 9 RDO - 4-Star X01 Eagle - 29

A 29″ carbon frame hardtail crosscountry bike with ultra high-end components.
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Manufacturer Price

$5,400
Weight19.8 lbs  
FrameCarbon
SuspensionHardtail, 100mm
ForkFox Factory Float 32
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetX01 Eagle, X1
BrakesHydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

28 mph

AIR 9 RDO - 4-Star X01 Eagle - 29

27 mph

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Highest gear

(descending)

Sizing
XS

5'1" – 5'6"

SM

5'4" – 5'9"

MD

5'7" – 6'0"

LG

5'10" – 6'3"

XL

6'0" – 6'5"

🐐 Estimated

Rider Fit Notes

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Reviews
Bicycling
First Look: Choose Your Wheel Size With The New Niner Air 9 Hardtail Mountain Bike

Aug 2017 · Ron Koch

Niner updates two aluminum models, adds new colors and goes SRAM 1x with all its Star builds.

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Singletrack World
Review: Niner AIR 9 Carbon

Oct 2016 · Wil Barrett

US brand Niner has been championing big wheels since 2005. So how does the AIR 9 Carbon stack up against the BMC Team Elite and Trek Procaliber?

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Bikerumor
Review: Niner Air 9 RDO floats like a dragonfly and stings like a really angry yellow jacket

Jul 2016

With suspension technology changing faster than the choice for president, we have become accustomed to waking up in the morning to see what version of what suspension platform is ruling the world that day. Though not as intriguing, we sometimes forget that the simple characteristics of a tried and true hardtail are still as relevant …

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MTBR
2017 Niner AIR 9 RDO

May 2016

Merging the pedaling efficiency of first RDO and the ride quality of the second, this third iteration modernizes the geometry to create an attractive XC racing hardtail. - Mtbr.com

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Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Niner RDO carbon fiber, internal cable routing, PF30 BB, single-speed compatible.

BB StandardPF30, 73mm, Press Fit

Tire Clearance2.4"

Fork

FOX 32 SC FLOAT FACTORY FIT4, W/ REMOTE L/O, KASHIMA COAT, 100MM, 110X15MM, 51MM OFFSET

Travel100mm

Spring TypeAir

Shock

N/A

Spring TypeAir

Bottom Bracket

73mm PF30 BB Shell (Adapters Required For BSA Type BBs)

Headset

NINER INTEGRATED SHIS DESCRIPTION IS42/28.6|IS52/40

Stem

NINER RDO STEM, NINER GRAPHIC

Handlebar

NINER FLAT TOP RDO, 780MM, NINER GRAPHIC

Saddle

NINER CUSTOM WITH CRN-TI RAILS, EMBOSSED NINER GRAPHIC

Seatpost

NINER RDO SEAT POST, 370MM, NINER GRAPHIC

TypeRigid

Grips

NINER GRRRIPS L/O

Groupset
Rear Derailleur

SRAM X01 EAGLE 12SP

Front Derailleur

N/A

Crank

SRAM X1 EAGLE CARBON DUB 32T CNC RING

Shifters

SRAM X01 EAGLE 12SP

Cassette

SRAM EAGLE XG 1295, 10-50T

Chain

SRAM X01 EAGLE 12SP

Brakes

SRAM GUIDE RSC

TypeHydraulic Disc

Brake Levers

SRAM GUIDE RSC

Wheels
Rims

Front: STANS NOTUBES ARCH S1, NEO HUB 110X15MM FRONT, Rear: STANS NOTUBES ARCH S1, NEO HUB 148X12MM REAR

Tires

Front: MAXXIS REKON 3C/EXO/TR 29x2.4 WT FRONT, Rear: MAXXIS REKON RACE 2C/EXO/TR 29x2.25 REAR

Disc Rotors

180/160 SRAM CENTERLINE ROTORS

Rider Notes
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Last updated April 9
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