Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
Previous used estimate
$124 - $127
Actual value depends on condition, size, and local demand.

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Trek's 3500 Disc is a quality mountain bike ready for any and every adventure. Trek's aluminum frame is light for nimble handling, easy acceleration, and quick climbing. It's also built tough so it's fully capable of handing real trail riding. The 3500's 75mm-travel suspension fork dispatches bumps, rough trails, and roots with ease, grace, and confidence. This trail-tamer delivers in the specs department too, with quick-shifting 21-speed Shimano gearing that makes easy work of the hills, a nice set of Bontrager wheels with fat, knobby tires, and disc brakes that are powerful and controllable in all conditions.
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.