Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Niner
2021 Niner SIR 9 2-Star
Estimated used market value
$1,010 - $1,040
Actual value depends on condition, size, and local demand.
Value Guide market data · 2021 Niner SIR 9 2-Star
12-month projected trend
12%
Direction and magnitude, not judgment
vs. category average
4%
Drops faster than category avg
Price over time - 2021 Niner SIR 9 2-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. SRAM does it again with this 2-Star SX Eagle parts kit. It's a wallet-friendly yet high-performing parts kit. Mated to our SIR 9 frame and Marzocchi suspension, every feature of this adventure-seeking singletrack slayer is fully optimized. - Niner alloy wheels, 30mm internal width - Marzocchi Bomber Z2 rail suspension fork, 120mm travel - Niner Alloy seatpost
Specifications
- Subtype
- Cross Country
- Category
- Mountain
- Component Fork
- Marzocchi Bomber Z2 Rail, Sweep Adj, 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 SX Eagle 12sp
- 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 Level
- Component Pedals
- Sold separately
- Component Rotors
- SRAM Level
- Component Saddle
- Niner Custom TR With CrMo Rails, Embossed Niner Graphic
- Component Headset
- Niner Internal ZS SHIS Description ZS44/28.6|ZS56/40
- Component Crankset
- SRAM X1 1K Eagle Dub, 32T
- Component Seatpost
- Niner Alloy, 370mm
- Component Shifters
- SRAM SX Eagle 12sp
- Component Handlebar
- Race Face Aeffect R 780mm Wide, 20mm Rise, 35mm Clamp
- Component Wheel Set
- Front: Niner Alloy, 30mm Internal Width, 110x15mm Rear: Niner Alloy, 30mm Internal Width, 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 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 1210 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, 370mm
- Saddle
- Niner Custom TR 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 SX Eagle 12sp
- Stem
- Race Face Aeffect R 40mm, 35mm Clamp
- Accessories & Extras
- Stans No Tubes Sealant (2 x 2oz Bottles)
- Brake Levers
- SRAM Level
- Brakes
- SRAM Level
- Fork
- Marzocchi Bomber Z2 Rail, Sweep Adj, 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 SX Eagle 12sp
- Tape/Grips
- Niner Grrrips L/O Nylon Soft Compound
- Color
- Cement/Black/Copper
- Size
- X-Large
- Cassette/Freewheel
- SRAM PG 1210 11-50T
- Rotors
- SRAM Level
- Wheel Set
- Front: Niner Alloy, 30mm Internal Width, 110x15mm Rear: Niner Alloy, 30mm Internal Width, 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.