Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Niner
Previous used estimate
$857 - $881
Actual value depends on condition, size, and local demand.

12-month projected trend
1%
Direction and magnitude, not judgment
vs. category average
3%
Drops faster than category avg
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
Niner’s SIR 9 takes on shredding trail with the agility of a ninja through tight singletrack. That makes for a ride you won’t believe. The Reynolds 853 steel frame is rugged yet forgiving when you’re pushing hard over rocks and roots, while the carbon fork up front shrugs off chatter with ease, making for a ride you might just want to take everywhere. Big Niner carbon hoops steamroll rock gardens so you get fast and stay there, while Niner’s Cogalicious cog provides the right gear and toughness for the whole season. The real beauty of the SIR 9 is in the details, like the Shimano XTR brakes that modulate like a dream, a host of Niner carbon components, and Rapid Rob tires from Schwalbe that bite into corners.
Inspection
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Inspection
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Confirm fork and rear shock service intervals and check pivot bearings for play.