Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
Previous used estimate
$980 - $1,008
Actual value depends on condition, size, and local demand.

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Diamondback’s Mason FS 29 Pro doesn't just break down conventional 29er barriers, it jumps over them. This all-mountain rig rocks a lightweight aluminum frame and 29-inch Easton Haven wheels to float uphill like a racer, while its slack head angle, stout through-axles, and 140mm of Fox-powered Knuckle Box suspension let you descend like a pro. SRAM's X01 drivetrain instantly clicks through its 11-speeds to give you the right gear for any situation, and Avid X0 Trail brakes give you 4-pistons of insane stopping power to keep you pinned on steep chutes and hairpin turns. With its Race Face Atlas bars and stem, Crank Brothers dropper post, and Kenda's legendary Nevegal tires, you've got a mountain-slayer that rallies all-day epics just as capably as it crushes the downhills.
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.