Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Niner
Previous used estimate
$661 - $680
Actual value depends on condition, size, and local demand.

12-month projected trend
5%
Direction and magnitude, not judgment
vs. category average
4%
Drops faster than category avg
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
Niner took the already rowdy ROS 9 and fattened it up for your pleasure. It shrugs off abuse with a frame built out of tough 4130 chromoly and features Niner’s popular long-travel hardtail geometry that begs to carve and huck all the way home. It has the same unwavering 142 x 12mm through-axle dropouts out back with simple inserts for easy setup with both single speed and geared options. And, it clears 3.0-inch rubber, making the ROS 9 Plus versatile as a four-season ripper, extra-gnarly trail tamer, and all-around plaything. Niner built a chromoly fork for this beast that combines the benefits of a tapered steerer, a 15mm thru-axle, and a relatively short axle-to-crown length. All these features mean you get a stable and predictable front end that climbs well, avoids rotor rub, and precisely carves out whatever line you choose. To make sure you can have your ROS 9 Plus just how you like it, Niner included all the same bells and whistles as on the standard ROS 9 frame, like internal dropper post routing, removable front and rear derailleur hangers, and integrated MRP bash guard mounts on the bottom bracket shell. Niner’s ROS Plus 3-Star XT 1x gives you the tools you need to back up your boasts. The svelte Shimano XT 1 x 11-speed drivetrain gives you a generous range of gears with a monster cassette and XT Shadow Plus rear derailleur that team up to make a clean, lightweight drivetrain that will keep you in gear so you can drop the hammer, not your chain. While we’re on the subject of dropping, when you’re losing elevation like a lead balloon, you’ll be thankful for the ruthless Shimano XT brakes that slow your marginally-controlled self, so you rail the corner and avoid any cacti cartwheel. The Stan's wheelset features Neo hubs and 52mm-wide Hugo rims that let the Vittoria Bamboloni tires spread out all over the trail for unnerving traction whether you're going up, down, or 'round and 'round. Niner threw a KS dropper post on the ROS 9 Plus, allowing you to instantly switch spirit animals from mountain goat to downward dog so that you can make the most of every section of trail. Make your life a little better each day on the ROS 9 Plus 3-Star.
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.