Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
Previous used estimate
$61 - $62
Actual value depends on condition, size, and local demand.

12-month projected trend
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Direction and magnitude, not judgment
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Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
Diamondback's Viper X is a versatile rig that's perfect for racing, dirt jumping or just getting around town. It lets you experience the speed of a race bike and the strength of a jumping rig in one cool package. With a sturdy steel frame and durable components from Diamondback, Rush and a SST cable detangler, the Viper X gives you the speed, control and durability to rule the trails and track.
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.