Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices

Today’s Deals

2026 Niner

AIR 9 - SX

A 27.5″ aluminum frame hardtail trail bike with upper mid-range components.

Manufacturer Price

$2,199
FrameAluminum
SuspensionHardtail, 120mm
Wheels27.5″ Aluminum
Drivetrain1 × 12
GroupsetX1, SX Eagle
BrakesSRAM Level Hydraulic Disc
SeatpostDropper
View on ninerbikes.comLearn about Niner
Similar Bikes
Top Comparison
Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
AIR 9 - SX
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)

24 mph

AIR 9 - SX

26 mph

Similar Bikes

Highest gear

(descending)

Sizing
SM

5'2" – 5'9"

MD

5'8" – 6'1"

LG

5'10" – 6'4"

XL

6'3" – 6'8"

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Price History
Geometry
Specs
Build
Frame

NINER HYDROFORMED AND WELDED 6061-T6 ALUMINUM

BB StandardPF30, Press Fit

Tire Clearance2.4"

ColorOlive Gre/ Orange

Fork

RAIDON 34X BOOST 29", 120mm, 15X110MM, 51MM OFFSET

Travel120mm

Shock

N/A

Bottom Bracket

SRAM DUB PF30

Headset

NINER INTEGRATED SHIS DESCRIPTION IS42/28.6|IS52/40

Stem

NINER ALLOY 31.8MM, NINER GRAPHIC (XS/SM/MD 50mm; LG/XL 60mm)

Handlebar

NINER FLAT TOP ALLOY, 780MM, NINER GRAPHIC

Saddle

NINER CUSTOM WITH CR-MO RAILS, EMBOSSED NINER GRAPHIC

Seatpost

KS LEV SI (XS/S-100MM, M/L/XL-150MM)

TypeDropper

Grips

NINER GRRRIPS L/O NYLON SOFT COMPOUND

Groupset
Rear Derailleur

SRAM SX EAGLE 12SP

Front Derailleur

N/A

Crank

SRAM X1 1K EAGLE DUB, 32T (XS/S/M/L - 170MM, XL - 175MM)

Shifters

SRAM SX EAGLE 12SP

Cassette

SRAM PG 1210 11-50T

Chain

SRAM SX EAGLE 12SP

Brakes

SRAM LEVEL

TypeSRAM Level Hydraulic Disc

Brake Levers

SRAM LEVEL

Wheels
Rims

Front: Niner Alloy, aluminum clincher, 25mm internal width, Rear: Niner Alloy, aluminum clincher, 25mm internal width

Tires

Front: SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.6, Rear: SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.35

Disc Rotors

180/160MM G2CS ROTORS

Rider Notes
Riders Also Viewed

First added May 9

Last updated June 20