Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Niner
Previous used estimate
$575 - $591
Actual value depends on condition, size, and local demand.

12-month projected trend
1%
Direction and magnitude, not judgment
vs. category average
1%
Drops faster than category avg
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
With an aggressive geometry that encourages getting rowdy and taking hard lines, Niner's ROS 9 is here to change your perception of hardtails. The 4130 steel frame gives you the durability and stellar ride quality you've come to expect, while the ROS 9's pin-it attitude comes from the super short chainstays that make it a whippy, jumpy beast in tight singletrack, and from the slack head tube angle that keeps you rolling away clean when getting yourself into trouble. Sniper lines or ugly mobbing, however you're riding a Fox 32 Float fork gives you cushy landing gear for those natural kickers and drops, and the Stan's NoTubes Rapid wheels make rough rocks and roots insignificant rattles. And with the singlespeed drivetrain repping a Niner Cogalicious cog out back, you get the perfect, no-fuss gear for ups, downs, and everything in between.
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.