Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
Previous used estimate
$645 - $663
Actual value depends on condition, size, and local demand.

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Diamondback’s Mason Pro is an aggressive, efficient trail tool. This mountain-slaying rig boasts Diamondback's lightweight aluminum frame and rock-conquering 29-inch wheels to climb like a racer, while its tapered head tube, stout 142x12mm rear through-axle, and smooth 140mm-travel Fox 34 fork let you descend like a pro. You’ll also love how the rugged, crisp-shifting 1x10 Race Face/SRAM drivetrain powers up climbs, and how the Avid Elixir 5 brakes scrub speed in all conditions. Outfitted with a Race Face Respond bar and stem, a Crank Brothers dropper seatpost, and tough WTB wheels, you have an outstanding package to rail technical trails day in and day out.
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.