Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
Previous used estimate
$135 - $138
Actual value depends on condition, size, and local demand.

12-month projected trend
— %
Direction and magnitude, not judgment
vs. category average
2%
Holds value better than category avg
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
Watch your young pilot takeoff on Trek's Superfly 20. The aluminum frame, Shimano drivetrain and Bontrager components make it a legit bike, ready for real rides with you! And Trek's Dialed components have extra built-in adjustability so the bike can grow with your child. Better get used to the idea now: your little shredder will be faster than you soon.
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.