Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
Previous used estimate
$75 - $78
Actual value depends on condition, size, and local demand.

12-month projected trend
6%
Direction and magnitude, not judgment
vs. category average
4%
Drops faster than category avg
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
Choose a different build or frame style to see its value.
There are few activities better than ripping around on bikes to get kids out for fresh air, fitness, and a whole lot of fun. The Octane 20 is the perfect bike for the job with its durable aluminum alloy frame, suspension fork, and beefy tires. A kid-friendly grip shifter selects from six gears, with the rear derailleur protected from damage by a clever guard. If your up-and-coming rider is ready to graduate from a push- or single-speed bike, the Octane 20 is the perfect tool to handle neighborhood shenanigans and those first forays into the woods.
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.