2018 Niner

Air 9 29 3-Star

A 29″ aluminum frame hardtail trail bike with high-end components.

MSRP$3,300
FrameAluminum
SuspensionHardtail, 120mm
ForkFox Factory Float 34
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetGX, Truvativ Stylo
BrakesHydraulic Disc
SeatpostDropper
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Air 9 29 3-Star
Other Trail 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 29 3-Star

26 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

Aluminum

Fork

FOX 34 Factory Float FIT4, Kashima coating, EVOL air canister, 3-position compression adjustment

Travel120mm

Spring TypeAir

Shock

N/A

Spring TypeAir

Bottom Bracket

Pressfit

Headset

Niner headset, integrated SHIS, IS42 top, IS52 bottom

Stem

Race Face Aeffect R, 50mm length

Handlebar

Race Face Aeffect R, 780mm width, 20mm rise

Saddle

Niner Custom TR, chromoly rails, printed Niner graphic

Seatpost

KS Lev Integra SI

TypeDropper

Pedals

N/A

Grips

Niner Grrrips, nylon flanges

Groupset
Rear Derailleur

SRAM Eagle GX, 12-speed

Front Derailleur

N/A

Crank

SRAM Stylo 7K Eagle

Shifters

SRAM Eagle GX, 12-speed

Cassette

SRAM XG-1275, 10-50 tooth

Chain

SRAM GX Eagle, 12-speed

Chain Guide

N/A

Brakes

SRAM Guide R, 180mm front / 160mm rear rotors

TypeHydraulic Disc

Brake Levers

SRAM Guide R

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

Front: Maxxis Ardent 2.4", dual compound, tubeless ready, Rear: Maxxis Ardent 2.25", dual compound, tubeless ready

Rider Notes
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Last updated April 14
Not listed for 2,169 days