Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Niner
2018 Niner AIR 9 2-Star Plus
Previous used estimate
$715 - $735
Actual value depends on condition, size, and local demand.
Value Guide market data · 2018 Niner AIR 9 2-Star Plus
12-month projected trend
7%
Direction and magnitude, not judgment
vs. category average
3%
Drops faster than category avg
Price over time - 2018 Niner AIR 9 2-Star Plus
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All AIR model years
Compare AIR 9 2-Star Plus models
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Overview
About this bike
Niner's new AIR 9 is the perfect blend of cross-country quickness mixed with a rowdy attitude. Run it geared. Run it singlespeed. Comfortable enough for all-day riding and quick enough to pin it at the races, the new AIR 9 handles what you throw at it. Modern geometry puts the rider in the balanced spot on the bike and Boost spacing gives you tire and wheel options to suit your style and location. Top it off with internal routing for the KS Lev dropper post and you're looking at one very capable bike. The 2-star build gives you a wide-range SRAM GX Eagle 1x12 drivetrain, Guide R hydraulic disc brakes, and a Fox 34 Float Rhythm fork with 120mm of travel. 27.5+ Niner alloy wheels wrapped in Maxxis Rekon rubber puts massive traction beneath you, and the Race Face Aeffect R bar and stem combo complement the AIR 9's geometry for precise control when you want it most.
Specifications
- Subtype
- Cross Country
- Category
- Mountain
- Component Fork
- Fox 34 Float Rhythm Grip Evol, Sweep adjust, 120mm
- Component Size
- X-Small, Small, Medium, Large, X-Large
- Component Stem
- Race Face Aeffect R 50mm, 35mm Clamp
- Product Family
- AIR
- Component Axles
- Front: 110 x 15mm Rear: 148 x 12mm
- Component Chain
- SRAM GX Eagle 12sp
- Component Color
- Black/Cyan
- Component Frame
- AIR 9 hydroformed aluminum
- Component Brakes
- SRAM Guide R, 180/160mm G2CS rotors
- Component Saddle
- Niner Custom TR with Cr-Mo Rails, Printed Niner Graphic
- Component Headset
- Niner Integrated SHIS IS42/28.6|IS52/40
- Component Cassette
- SRAM Eagle XG 1275, 10-50t
- Component Crankset
- SRAM Stylo 7k Eagle
- Component Shifters
- SRAM GX Eagle 12sp
- Component Handlebar
- Race Face Aeffect R 780mm Wide, 20mm Rise, 35mm Clamp
- Component Seat Post
- KS Lev SI
- Component Chainrings
- 32T
- Component Front Tire
- Front: Maxxis Rekon+ DC/EXO/TR 27.5 x 2.8 Rear: Maxxis Rekon+ DC/EXO/TR 27.5 x 2.8
- Component Tape Grips
- Niner Grips L/O Nylon Flanged
- Component Brake Levers
- SRAM Guide R
- Component Bottom Bracket
- SRAM (PF30)
- Component Rear Derailleur
- SRAM GX Eagle, 12-speed
- Crankset
- SRAM Stylo 7k Eagle
- Bottom Bracket
- SRAM (PF30)
- Chain
- SRAM GX Eagle 12sp
- Saddle
- Niner Custom TR with Cr-Mo Rails, Printed Niner Graphic
- Handlebar
- Race Face Aeffect R 780mm Wide, 20mm Rise, 35mm Clamp
- Headset
- Niner Integrated SHIS IS42/28.6|IS52/40
- Rear Derailleur
- SRAM GX Eagle, 12-speed
- Stem
- Race Face Aeffect R 50mm, 35mm Clamp
- Axles
- Front: 110 x 15mm Rear: 148 x 12mm
- Brake Levers
- SRAM Guide R
- Brakes
- SRAM Guide R, 180/160mm G2CS rotors
- Cassette
- SRAM Eagle XG 1275, 10-50t
- Chainrings
- 32T
- Fork
- Fox 34 Float Rhythm Grip Evol, Sweep adjust, 120mm
- Frame
- AIR 9 hydroformed aluminum
- Seat Post
- KS Lev SI
- Shifters
- SRAM GX Eagle 12sp
- Tape/Grips
- Niner Grips L/O Nylon Flanged
- Color
- Black/Cyan
- Size
- X-Large
- Front Tire
- Front: Maxxis Rekon+ DC/EXO/TR 27.5 x 2.8 Rear: Maxxis Rekon+ DC/EXO/TR 27.5 x 2.8
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.