2018 Niner

AIR 9 RDO 4-STAR

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

MSRP$5,300
FrameCarbon
SuspensionHardtail, 100mm
ForkFox Factory Float 32
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetX01, X01 Eagle
BrakesHydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
AIR 9 RDO 4-STAR
Other Crosscountry bikes
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

27 mph

Similar Bikes

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

AIR 9 RDO - NINER RED/CARBON OR CMYK OR ORANGE

BB StandardPF30, Press Fit

Fork

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

Travel100mm

Spring TypeAir

Shock

N/A

Spring TypeAir

Bottom Bracket

SRAM%20PF30

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, 400MM, NINER GRAPHIC

TypeRigid

Pedals

N/A

Grips

NINER GRRRIPS L/O

Groupset
Rear Derailleur

SRAM Eagle X01, 12-speed

Crank

SRAM X1 EAGLE CARBON PF30 32T CNC RING

Shifters

SRAM X01 EAGLE 12SP

Cassette

SRAM EAGLE XG 1295, 10-50T

Chain

SRAM X01 EAGLE 12SP

Chain Guide

N/A

Brakes

SRAM GUIDE RSC

TypeHydraulic Disc

Brake Levers

SRAM GUIDE RSC

Wheels
Rims

Stan's NoTubes Neo/ZTR Arch MK3

Front Hub

Stan's NoTubes Neo/ZTR Arch MK3, 15mm x 110mm, 12mm x 148mm

Rear Hub

Stan's NoTubes Neo/ZTR Arch MK3, 15mm x 110mm, 12mm x 148mm

Tires

MAXXIS IKON 3C/EXO/TR 2.35 FRONT

Rider Notes
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Last updated April 14
Not listed for 2,190 days