Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
Previous used estimate
$286 - $294
Actual value depends on condition, size, and local demand.

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GT earned its wings way back in the early BMX race scene, and the Speed Series is the culmination of all those years of knowledge and refinement. Everything about the Pro is fast-we're talking about the hydroformed aluminum frame with a power-boosting BB30 bottom bracket, the tapered carbon fork, and the Alienation wheels with svelte sealed-bearing hubs. FSA supplies their stiff cranks for quick starts and the chainring is CNC'd to shave grams off the bike and seconds off the clock. The Speed Series also sports chromoly bars and an integrated seat clamp, which holds an SDG I-Beam post and saddle. Looks like the best place to check this bike out, aside from the shop, is on the podium.
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.