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
Value Guide market data · 2021 Niner AIR 9 RDO 2-Star
12-month trend
13%
Direction and magnitude, not judgment
vs. category average
2%
Holds value better 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
2021$7,440 - $8,640Currently viewing
2019$5,022 - $5,832▼ 32% vs. 2021
2018$4,836 - $5,616▼ 35% vs. 2021
2017$6,045 - $7,020▼ 19% vs. 2021
2016$7,440 - $8,6400% vs. 2021
2015$3,254 - $3,779▼ 56% vs. 2021
2014$5,952 - $6,912▼ 20% vs. 2021
2013$6,044 - $7,019▼ 19% vs. 2021
2012$5,766 - $6,696▼ 22% vs. 2021
2008$2,413 - $2,803▼ 68% vs. 2021
2007$2,412 - $2,802▼ 68% vs. 20212021 AIR 9 RDO 2-Star lineup
Overview
About this bike
2021 Niner AIR 9 RDO 2-Star value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- 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
Drivetrain
- Groupset
- SRAM SX
- Bottom Bracket
- SRAM DUB PF30
- Cassette
- SRAM PG 1230 11-50T
- Chain
- SRAM SX Eagle 12sp
- Crankset
- SRAM X1 1K Eagle DUB, 32T
- Rear Derailleur
- SRAM SX Eagle 12sp
- Shifters
- SRAM SX Eagle 12sp
Brakes
- Brake Levers
- SRAM Level
- Brakes
- SRAM Level
- Rotors
- 180/160mm G2CS Rotors
Cockpit
- Handlebar
- Niner Flat Top Alloy, 780mm, Niner Graphic
- Headset
- Niner Integrated SHIS Description IS42/28.6|IS52/40
- Saddle
- Niner Custom With Chro-Mo Rails, Embossed Niner Graphic
- Seatpost
- Niner Alloy Seat Post, 400mm, Niner Graphic
- Stem
- Niner Alloy Stem, Niner Graphic
- Grips
- Niner Grrrips L/O Nylon Soft Compound
Wheels & Tires
- 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"
- Wheel Set
- Front: Niner Alloy, 25mm Inner Width, 110x15mm, Rear: Niner Alloy, 25mm Inner Width, 148x12mm
Pedals
- Pedals
- Sold separately
Accessories
- Accessories & Extras
- Stans No Tubes Sealant (2 x 2oz Bottles)
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.