Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
Previous used estimate
$694 - $714
Actual value depends on condition, size, and local demand.

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With race-pace speed and ride-all-day compliance, Trek's Madone 4 Series is practically in a class of its own. The light, lean 400-series OCLV carbon frameset boasts a stiff, beefy BB90 bottom bracket for optimal power transfer and a tapered E2 head tube so you can slice through corners with pinpoint precision. The 4 Series also features Trek's DuoTrap technology built into the frame so you can view speed, cadence and more from your ANT+ wireless device (sold separately) all while having the cleanest, most high tech bike around. Shimano's components include a slick-shifting 22-speed Ultegra drivetrain with the perfect gears to spin the tubeless-ready Bonty wheels up the climbs, and powerful Ultegra brakes for complete control back down. This able roadster also sports a sweet line-up of Bontrager's carbon and aluminum components, including a supportive Bontrager saddle.
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.