Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Niner
2018 Niner SIR 9 5-Star
Previous used estimate
$1,515 - $1,558
Actual value depends on condition, size, and local demand.
Value Guide market data · 2018 Niner SIR 9 5-Star
12-month projected trend
17%
Direction and magnitude, not judgment
vs. category average
5%
Drops faster than category avg
Price over time - 2018 Niner SIR 9 5-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 X01 Eagle 1x12 drivetrain and Guide RSC brakes provide wide-range gearing with ample stopping power in a lightweight combo, and a Fox 34 Float Factory 120mm fork, Niner Carbon XC wheelset, and a KS Lev Integra 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
- DT Swiss 350, 32h
- Component Size
- Small, Medium, Large, X-Large
- Component Stem
- Race Face Turbine Basic 50mm, 35mm Clamp
- Product Family
- SIR
- Component Axles
- Front: 110 x 15mm Rear: 148 x 12mm
- Component Chain
- SRAM X01 Eagle 12sp
- Component Color
- Slate Blue/Orange
- Component Frame
- SIR 9, Reynolds 853 steel
- Component Brakes
- SRAM Guide RSC, 180/160mm Centerline rotors
- Component Saddle
- Niner Custom TR with CrN-Ti Rails, Printed Niner Graphic
- Component Headset
- Niner Internal ZS SHIS ZS44/28.6|ZS56/40
- Component Cassette
- SRAM Eagle XG 1295, 10-50t
- Component Crankset
- SRAM X1 Eagle Carbon
- Component Shifters
- SRAM X01 Eagle 12sp
- Component Handlebar
- Race Face SixC, 820mm wide, 20mm rise, 35mm
- Component Seat Post
- KS Lev Integra
- 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 RSC
- Component Bottom Bracket
- SRAM (PF30)
- Component Rear Derailleur
- SRAM X01 Eagle 12sp
- Hubs
- DT Swiss 350, 32h
- Crankset
- SRAM X1 Eagle Carbon
- Bottom Bracket
- SRAM (PF30)
- Chain
- SRAM X01 Eagle 12sp
- Saddle
- Niner Custom TR with CrN-Ti Rails, Printed Niner Graphic
- Handlebar
- Race Face SixC, 820mm wide, 20mm rise, 35mm
- Headset
- Niner Internal ZS SHIS ZS44/28.6|ZS56/40
- Rear Derailleur
- SRAM X01 Eagle 12sp
- Stem
- Race Face Turbine Basic 50mm, 35mm Clamp
- Axles
- Front: 110 x 15mm Rear: 148 x 12mm
- Brake Levers
- SRAM Guide RSC
- Brakes
- SRAM Guide RSC, 180/160mm Centerline rotors
- Cassette
- SRAM Eagle XG 1295, 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 Integra
- Shifters
- SRAM X01 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.