Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2009 Trek 3900 WSD
Previous used estimate
$134 - $138
Actual value depends on condition, size, and local demand.
Value Guide market data · 2009 Trek 3900 WSD
12-month projected trend
— %
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2009 Trek 3900 WSD
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All 3900 model years
Compare 3900 WSD models
1 modelsChoose a different build or frame style to see its value.
Overview
About this bike
Enjoy some 2-wheeled fun with Trek's Women's 3900. Whether you're looking for adventure or out for fitness, you'll appreciate Trek's responsive Alpha aluminum frame and the bike's great bump-busting suspension fork. Plus, you'll love how the easy-pedaling 24-speed drivetrain makes easy work of the hills, and how the grippy Tektro linear-pull brakes give you confidence on the way back down.
Specifications
- Category
- Mountain
- Component Hubs
- Front: aluminum; Rear: Shimano RM30
- Product Family
- 3900
- Component Chain
- Matrix 550
- Component Tires
- Bontrager Connection 2, 26 x 2.0
- Component Pedals
- Wellgo platform
- Component Saddle
- Bontrager FIT
- Component Brakeset
- Tektro linear-pull
- Component Cassette
- SRAM PG-830, 8-speed: 11-32
- Component Handlebar
- Bontrager
- Component Shift Levers
- Shimano EF50
- Component Handlebar Stem
- Bontrager
- Component Frame Tubing Material
- Trek Alpha White Series aluminum
- Frame Tubing Material
- Trek Alpha White Series aluminum
- Hubs
- Front: aluminum; Rear: Shimano RM30
- Tires
- Bontrager Connection 2, 26 x 2.0
- Brakeset
- Tektro linear-pull
- Shift Levers
- Shimano EF50
- Pedals
- Wellgo platform
- Chain
- Matrix 550
- Saddle
- Bontrager FIT
- Handlebar
- Bontrager
- Handlebar Stem
- Bontrager
- Cassette
- SRAM PG-830, 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.