Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Reid
Previous used estimate
$148 - $152
Actual value depends on condition, size, and local demand.

12-month projected trend
11%
Direction and magnitude, not judgment
vs. category average
8%
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.
Light and fast, sturdy and resilient, the Viper 20" is the perfect urban adventure kids bike for little ones aged 5 to 7. Featuring 7-speed gearing and all kid-specific componentry and geometry, we've designed their first 'Big Bike' to be a place they feel at home. Parents can be assured that the Viper 20" is built with safety as the first priority. Designed with safe and reliable alloy, ready-for-anything components make the Viper 20" the ultimate kids bike for tearing around the neighborhood whilst taking knocks and drops in its stride. Gift them the taste of freedom and let them explore the great outdoors! Kids can be unforgiving on their bikes, but our range of kids bikes are built to withstand that tough love. - Rider Height: 3'9" - 4'4"
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.