Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
Previous used estimate
$373 - $383
Actual value depends on condition, size, and local demand.

12-month projected trend
8%
Direction and magnitude, not judgment
vs. category average
6%
Drops faster than category avg
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
Choose a different build or frame style to see its value.
The fastest human alive topped out at 27 miles per hour. Fastest bear? 35 miles per hour. The takeaway? Bears are fast; particularly this bear, el Oso Dos. Diamondback made this bike quick by equipping it with a light, strong double-butted aluminum frame and sleek alloy air-formed fork. They specifically designed el Oso Dos around a rigid platform to shave pounds and let the gigantic tires take care of the suspension — something they do quite well. Fast, sleek ... el Oso Dos is also an out-and-out fat bike, and that means you can ride this bike up and over just about anything and under any conditions.
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.