2021 Diamondback Sync'r 24

Fair market value

$425 - $550

Retail price new

$1,050

The Diamondback Sync'r 24 is a highly desirable youth hardtail featuring modern geometry, a 1x SRAM drivetrain, and hydraulic disc brakes. The original MSRP was roughly $1,050 in 2021. An asking price of $500 represents approximately 50% depreciation, which is standard for a 3-4 year old quality kids' MTB. The bike appears structurally sound but dirty in the photos; since it has been 'sitting around,' a buyer should anticipate needing a basic tune-up (brake bleed, chain lube, shifting adjustment), which justifies negotiating slightly below the $500 ask.

An AI estimate, not a professional valuation. Check the comparables before you buy.