Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
Previous used estimate
$526 - $541
Actual value depends on condition, size, and local demand.

12-month projected trend
2%
Direction and magnitude, not judgment
vs. category average
2%
Drops faster than category avg
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
Diamondback’s Mason Pro is an aggressive, efficient 29er that wants to charge in full-suspension territory. This mountain-slaying rig boasts Diamondback's lightweight aluminum frame with rock-conquering 29-inch wheels to climb with the XC pack, while its pinned geometry, stout 142x12mm rear thru-axle, and smooth 140mm-travel Fox 34 fork let you descend with the enduro bros. You’ll also love how the rugged, crisp-shifting 1x10 Race Face/SRAM drivetrain has the gears and chain management you need, and how the SRAM brakes scrub speed in all conditions. Outfitted with a Race Face Respond bar and stem, a KS LEV dropper seatpost, and tubeless Stan's wheels, you have an supremely capable package, no matter what the territory.
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.