Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
Previous used estimate
$465 - $478
Actual value depends on condition, size, and local demand.

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GT's Sensor 29er Expert is an all-day, go-anywhere bike that is perfect for those intrepid explorers who want to know what's on the other side of that ridge. It also just happens to be fast enough for quick after-work sessions and weekend throwdowns with your crew. No matter how your ride, GT's Independent Drivetrain excels. It's got 120mm of travel out back thanks to a Fox Float shock. And the front is matched with a 120mm Marzocchi leading the way. Plus, a Shimano group including 27 speeds and disc brakes give you no-hassle shifting and braking 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.