Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Niner
2018 Niner SIR 9 3-Star
Previous used estimate
$1,014 - $1,043
Actual value depends on condition, size, and local demand.
Value Guide market data · 2018 Niner SIR 9 3-Star
12-month projected trend
8%
Direction and magnitude, not judgment
vs. category average
5%
Drops faster than category avg
Price over time - 2018 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
Take charge of your ride with this Reynolds 853 steel frame designed around Niner's [R]evolution trail geometry. Ride it hard. Ride it fast. After all, it's made from a truly time-tested material that's been air hardened and heat treated. The efficient, yet compliant ride quality of the SIR 9 hearkens back to a simpler time. A SRAM GX Eagle 1x12 drivetrain and Guide R brakes provide wide-range gearing with ample stopping power, and a Fox 34 Float Factory 120mm fork, Stan's Arch wheelset, and a KS Lev dropper seatpost create a solid platform for getting rowdy on the trail. Niner knew you'd also enjoy loading this steel steed for a weekend of bikepacking adventure so they added 18 mounting points to accommodate those needs. However you choose to use the SIR 9, its simple design will inspire a renewed desire for exploration and reward you with that comfortable ride only a high-grade steel hardtail can supply.
Specifications
- Subtype
- Cross Country
- Category
- Mountain
- Component Fork
- Fox 34 Float Factory Fit4, 3 position w/adjust, Kashima Coat, 120mm
- Component Hubs
- Stan's NoTubes Neo
- Component Size
- Small, Medium, Large, X-Large
- Component Stem
- Race Face Aeffect R 50mm, 35mm Clamp
- Product Family
- SIR
- Component Axles
- Front: 110 x 15mm Rear: 148 x 12mm
- Component Chain
- SRAM GX Eagle 12sp
- Component Color
- Slate Blue/Orange
- Component Frame
- SIR 9, Reynolds 853 steel
- Component Brakes
- SRAM Guide R, 180/160mm G2CS rotors
- Component Saddle
- Niner Custom TR with Cr-Mo Rails, Printed Niner Graphic
- Component Headset
- Niner Internal ZS SHIS ZS44/28.6|ZS56/40
- 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 Ardent DC/EXO/TR 29 x 2.4 Rear: Maxxis Ardent DC/EXO/TR 29 x 2.25
- 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 12sp
- Hubs
- Stan's NoTubes Neo
- 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 Internal ZS SHIS ZS44/28.6|ZS56/40
- Rear Derailleur
- SRAM GX Eagle 12sp
- 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 Factory Fit4, 3 position w/adjust, Kashima Coat, 120mm
- Frame
- SIR 9, Reynolds 853 steel
- Seat Post
- KS Lev SI
- Shifters
- SRAM GX Eagle 12sp
- Tape/Grips
- Niner Grips L/O Nylon Flanged
- Color
- Slate Blue/Orange
- Size
- X-Large
- Front Tire
- Front: Maxxis Ardent DC/EXO/TR 29 x 2.4 Rear: Maxxis Ardent DC/EXO/TR 29 x 2.25
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.