Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
Previous used estimate
$1,548 - $1,592
Actual value depends on condition, size, and local demand.

12-month projected trend
1%
Direction and magnitude, not judgment
vs. category average
3%
Drops faster than category avg
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
Months of preparation, years of training: you're ready. Now all you need is the bike to get you there, and that's Trek's Superfly 9.9 SL XX1. Feel the power course through its incredibly light OCLV Mountain Carbon frame and giant BB95 bottom bracket as you jump from the line. The oversize E2 head tube and buttery smooth RockShox RS-1 fork guide you through the course with tactical precision. Your legs are burning, ignore them; grab another gear from SRAM's revolutionary XX1 11-speed drivetrain and go harder. The course is littered with challenging corners and technical surprises but Avid's XX discs give you the power and modulation to leave the competition in your wake. The miles are racking up and the hours are melting away, but the light, ergonomic Bontrager carbon components keep you calm and comfortable. The Superfly 9.9 has what you need to win. Do you?
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.
Inspection
Confirm fork and rear shock service intervals and check pivot bearings for play.