Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
Previous used estimate
$728 - $749
Actual value depends on condition, size, and local demand.

12-month projected trend
1%
Direction and magnitude, not judgment
vs. category average
1%
Drops faster than category avg
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
Diamondback’s Mason FS doesn't just break down conventional 29er barriers, it jumps over them. This all-mountain rig rocks a lightweight aluminum frame and 29-inch wheels to tackle uphills like an XC rig , while its slack head angle, stout through-axles, and 140mm of Fox-powered Knuckle Box suspension let you descend like a pro. SRAM's X7/X9 drivetrain instantly clicks through its 20-speeds to give you the right gear for any situation, and powerful SRAM brakes give you insane stopping power to keep you pinned on steep chutes and hairpin turns. With its wide bars and short stem 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.