Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2011 Trek 3900 Disc
Previous used estimate
$142 - $146
Actual value depends on condition, size, and local demand.
Value Guide market data · 2011 Trek 3900 Disc
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Price over time - 2011 Trek 3900 Disc
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All 3900 model years
Compare 3900 Disc models
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Overview
About this bike
Whether you're cruising the local trails or simply enjoying streets and bike paths for fitness and fun, the 3900 Disc is the perfect ride. Trek's White Series aluminum frame is light, tough and responsive, and you'll love the bump-busting 100mm-travel suspension fork. This sweet machine boasts an easy-pedaling 24-speed drivetrain that makes easy work of the hills and powerful mechanical-disc brakes to perfectly modulate your speed. The 3900 will bring you cycling joy for years to come.
Specifications
- Category
- Mountain
- Component Hubs
- Front: Formula; Rear: Shimano M475
- Product Family
- 3900
- Component Chain
- Bontrager 550
- Component Tires
- Bontrager LT-3, 26 x 2.0
- Component Pedals
- Wellgo Nylon Platform
- Component Saddle
- Bontrager SSR
- Component Brakeset
- Tektro Novela mechanical-disc w/6-inch rotors
- Component Cassette
- SRAM PG-820, 8-speed: 11-32
- Component Handlebar
- Bontrager
- Component Spoke Brand
- 14-gauge stainless-steel
- Component Shift Levers
- Shimano EF51
- Component Handlebar Stem
- Bontrager
- Component Frame Tubing Material
- Trek Alpha White Series aluminum
- Frame Tubing Material
- Trek Alpha White Series aluminum
- Hubs
- Front: Formula; Rear: Shimano M475
- Tires
- Bontrager LT-3, 26 x 2.0
- Spoke Brand
- 14-gauge stainless-steel
- Brakeset
- Tektro Novela mechanical-disc w/6-inch rotors
- Shift Levers
- Shimano EF51
- Pedals
- Wellgo Nylon Platform
- Chain
- Bontrager 550
- Saddle
- Bontrager SSR
- Handlebar
- Bontrager
- Handlebar Stem
- Bontrager
- Cassette
- SRAM PG-820, 8-speed: 11-32
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.