Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
Previous used estimate
$439 - $451
Actual value depends on condition, size, and local demand.

12-month projected trend
4%
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.
Choose a different build or frame style to see its value.
Diamondback's Mason is comfortable at the front of the pack. An established leader in the slack big-wheel hardtail category, it made sense to continue to push the limits with the emergence of 27.5 Plus and Boost technology. In a nutshell, this new configuration means significant gains in traction and wheel stiffness, with very little loss from its 29” wheel. If you’ve ridden a previous incarnation of the Mason, this may be hard to believe. But it’s true. They made sure to keep the ride characteristics as similar as they could: the butted/formed aluminum frame is low-slung and slack, with a 120mm Rockshox Reba fork that makes sure no trail is too rough. The ride has stayed distinctly all-mountain, especially with the increase in traction from running this wide of a tire. Powerful Avid hydraulic brakes provide excellent speed modulation, while a hill-crushing 20-speed SRAM drivetrain and wide bars round out the build on this trail-shredding machine.
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.