Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Niner
2021 Niner SIR 9 3-Star
Previous used estimate
$1,483 - $1,525
Actual value depends on condition, size, and local demand.
Value Guide market data · 2021 Niner SIR 9 3-Star
12-month projected trend
12%
Direction and magnitude, not judgment
vs. category average
6%
Drops faster than category avg
Price over time - 2021 Niner SIR 9 3-Star
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All SIR model years
Overview
About this bike
The SIR 9 is a comfortable, capable, hand-built bike made from proven, air-hardened, heat-treated Reynolds 853 steel. When you're spinning up the steeps, bombing down the backcountry, and grinding out the final miles as the sun sinks into the horizon, you need a bike you can trust. Expect the best from our fan-favorite 3-Star SRAM GX Eagle kit. Mated to the SIR 9 frame and FOX 34 Float Factory suspension, every feature of this adventure-seeking singletrack slayer is fully optimized. - DT Swiss M 1900 SPLINE wheels - FOX 34 SC Float Factory EVOL FIT4, 3 position, 120mm, 110X15mm, 44mm offset - KS LEV Si dropper post
Specifications
- Subtype
- Cross Country
- Category
- Mountain
- Component Fork
- Fox 34 SC Float Factory EVOL Fit4, 3 Position w/Adj, Kashima Coat, 120mm, 110x15mm, 44mm Offset
- Component Size
- Small, Medium, Large, X-Large
- Component Stem
- Race Face Aeffect R 40mm, 35mm Clamp
- Product Family
- SIR
- Component Chain
- SRAM GX Eagle 12 sp
- Component Color
- Cement/Black/Copper
- Component Frame
- Hand welded Reynolds 853 steel; external cable routing; integrated bottle, bag, rack and fender mounts; 12x148 thru axle
- Component Brakes
- SRAM G2 R
- Component Pedals
- Sold separately
- Component Rotors
- 180/160mm SRAM Centerline X
- Component Saddle
- Niner Custom With CrMo Rails, Embossed Niner Graphic
- Component Headset
- Niner Internal ZS SHIS Description ZS44/28.6|ZS56/40
- Component Crankset
- SRAM Descendant 7K Eagle DUB, 32T
- Component Seatpost
- KS LEV Si (XS/S-100mm, M/L/XL-150mm)
- Component Shifters
- SRAM GX Eagle 12 sp
- Component Handlebar
- Race Face Aeffect R 780mm Wide, 20mm Rise, 35mm Clamp
- Component Wheel Set
- Front: DT Swiss M 1900 Spline 30, Center Lock, 110x15mm Rear: DT Swiss M 1900 Spline 30, Center Lock 148x12mm
- Component Front Tire
- Front: Schwalbe Nobby Nic Evo Super Trail TLE Addix Speedgrip 2.6" Rear: Schwalbe Nobby Nic Evo Super Trail TLE Addix Speedgrip 2.35"
- Component Tape Grips
- Niner Grrrips L/O Nylon Soft Compound
- Component Brake Levers
- SRAM G2 R
- Component Bottom Bracket
- SRAM DUB PF30
- Component Rear Derailleur
- SRAM GX Eagle 12 sp
- Component Accessories Extras
- Stans No Tubes Sealant (2 x 2oz Bottles)
- Component Cassette Freewheel
- SRAM Eagle XG 1275, 10-52T
- Crankset
- SRAM Descendant 7K Eagle DUB, 32T
- Pedals
- Sold separately
- Bottom Bracket
- SRAM DUB PF30
- Chain
- SRAM GX Eagle 12 sp
- Seatpost
- KS LEV Si (XS/S-100mm, M/L/XL-150mm)
- Saddle
- Niner Custom With CrMo Rails, Embossed Niner Graphic
- Handlebar
- Race Face Aeffect R 780mm Wide, 20mm Rise, 35mm Clamp
- Headset
- Niner Internal ZS SHIS Description ZS44/28.6|ZS56/40
- Rear Derailleur
- SRAM GX Eagle 12 sp
- Stem
- Race Face Aeffect R 40mm, 35mm Clamp
- Accessories & Extras
- Stans No Tubes Sealant (2 x 2oz Bottles)
- Brake Levers
- SRAM G2 R
- Brakes
- SRAM G2 R
- Fork
- Fox 34 SC Float Factory EVOL Fit4, 3 Position w/Adj, Kashima Coat, 120mm, 110x15mm, 44mm Offset
- Frame
- Hand welded Reynolds 853 steel; external cable routing; integrated bottle, bag, rack and fender mounts; 12x148 thru axle
- Shifters
- SRAM GX Eagle 12 sp
- Tape/Grips
- Niner Grrrips L/O Nylon Soft Compound
- Color
- Cement/Black/Copper
- Size
- X-Large
- Cassette/Freewheel
- SRAM Eagle XG 1275, 10-52T
- Rotors
- 180/160mm SRAM Centerline X
- Wheel Set
- Front: DT Swiss M 1900 Spline 30, Center Lock, 110x15mm Rear: DT Swiss M 1900 Spline 30, Center Lock 148x12mm
- Front Tire
- Front: Schwalbe Nobby Nic Evo Super Trail TLE Addix Speedgrip 2.6" Rear: Schwalbe Nobby Nic Evo Super Trail TLE Addix Speedgrip 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.