Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Niner
2021 Niner AIR 9 RDO 2-Star
Previous used estimate
$1,109 - $1,141
Actual value depends on condition, size, and local demand.
Value Guide market data · 2021 Niner AIR 9 RDO 2-Star
12-month projected trend
13%
Direction and magnitude, not judgment
vs. category average
4%
Drops faster than category avg
Price over time - 2021 Niner AIR 9 RDO 2-Star
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All AIR model years
Compare AIR 9 RDO 2-Star models
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Overview
About this bike
Our flagship carbon fiber hardtail: AIR 9 RDO. Niner's purest expression of light, stiff Race Day Optimized carbon fiber rules the racecourse. This efficient yet compliant frame makes the most of carbon's unique properties to give you the best ride, no matter if you're gunning for a podium or cruising local singletrack. Hit the trail without a hit to your wallet, thanks to our 2-Star SRAM SX Eagle build kit. We extract every ounce of AIR 9 RDO performance at an affordable price level. - Niner alloy wheels, 25mm inner width - FOX 32 Float Rhythm GRIP EVOL fork, 100mm travel - SRAM Level brakes
Specifications
- Subtype
- Cross Country
- Category
- Mountain
- Component Fork
- Fox 32 Float Rhythm Grip EVOL, Sweep Adjust, 100mm, 110x15mm, 51mm Offset
- Component Size
- X-Small, Small, Medium, Large, X-Large
- Component Stem
- Niner Alloy Stem, Niner Graphic
- Product Family
- AIR
- Component Chain
- SRAM SX Eagle 12sp
- Component Color
- Sand/Orange, Satin Carbon/Silver
- Component Frame
- Niner RDO Carbon Fiber, Internal Cable Routing, PF30 BB, Single-speed Compatible
- Component Brakes
- SRAM Level
- Component Pedals
- Sold separately
- Component Rotors
- 180/160mm G2CS Rotors
- Component Saddle
- Niner Custom With Chro-Mo Rails, Embossed Niner Graphic
- Component Headset
- Niner Integrated SHIS Description IS42/28.6|IS52/40
- Component Crankset
- SRAM X1 1K Eagle DUB, 32T
- Component Seatpost
- Niner Alloy Seat Post, 400mm, Niner Graphic
- Component Shifters
- SRAM SX Eagle 12sp
- Component Handlebar
- Niner Flat Top Alloy, 780mm, Niner Graphic
- Component Wheel Set
- Front: Niner Alloy, 25mm Inner Width, 110x15mm Rear: Niner Alloy, 25mm Inner Width, 148x12mm
- Component Front Tire
- Front: Schwalbe Racing Ray EVO Super Terrain TLE Addix Speedgrip 2.35" Rear: Schwalbe Racing Ralph EVO Super Terrain TLE Addix Speed 2.35"
- Component Tape Grips
- Niner Grrrips L/O Nylon Soft Compound
- Component Brake Levers
- SRAM Level
- Component Bottom Bracket
- SRAM DUB PF30
- Component Rear Derailleur
- SRAM SX Eagle 12sp
- Component Accessories Extras
- Stans No Tubes Sealant (2 x 2oz Bottles)
- Component Cassette Freewheel
- SRAM PG 1230 11-50T
- Crankset
- SRAM X1 1K Eagle DUB, 32T
- Pedals
- Sold separately
- Bottom Bracket
- SRAM DUB PF30
- Chain
- SRAM SX Eagle 12sp
- Seatpost
- Niner Alloy Seat Post, 400mm, Niner Graphic
- Saddle
- Niner Custom With Chro-Mo Rails, Embossed Niner Graphic
- Handlebar
- Niner Flat Top Alloy, 780mm, Niner Graphic
- Headset
- Niner Integrated SHIS Description IS42/28.6|IS52/40
- Rear Derailleur
- SRAM SX Eagle 12sp
- Stem
- Niner Alloy Stem, Niner Graphic
- Accessories & Extras
- Stans No Tubes Sealant (2 x 2oz Bottles)
- Brake Levers
- SRAM Level
- Brakes
- SRAM Level
- Fork
- Fox 32 Float Rhythm Grip EVOL, Sweep Adjust, 100mm, 110x15mm, 51mm Offset
- Frame
- Niner RDO Carbon Fiber, Internal Cable Routing, PF30 BB, Single-speed Compatible
- Shifters
- SRAM SX Eagle 12sp
- Tape/Grips
- Niner Grrrips L/O Nylon Soft Compound
- Color
- Satin Carbon/Silver
- Size
- X-Large
- Cassette/Freewheel
- SRAM PG 1230 11-50T
- Rotors
- 180/160mm G2CS Rotors
- Wheel Set
- Front: Niner Alloy, 25mm Inner Width, 110x15mm Rear: Niner Alloy, 25mm Inner Width, 148x12mm
- Front Tire
- Front: Schwalbe Racing Ray EVO Super Terrain TLE Addix Speedgrip 2.35" Rear: Schwalbe Racing Ralph EVO Super Terrain TLE Addix Speed 2.35"
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.