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2015 Trek

3900 Disc

A 26″ aluminum frame crosscountry bike with modest components.

FrameAluminum
Wheels26″
Drivetrain3 × 8
GroupsetAcera, Altus
BrakesTektro Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

30 mph

3900 Disc

27 mph

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Highest gear

(descending)

Specs
Build
Frame

Alpha Silver Aluminum w/semi-integrated head tube, rack & fender mounts

Headset

1-1/8" threadless

Stem

Bontrager SSR, 31.8mm, 10 degree

Handlebar

Bontrager Riser, 31.8mm, 15mm rise

Saddle

Bontrager Evoke 1

Seatpost

Bontrager SSR, 2-bolt head, 31.6mm, 12mm offset

Type: Rigid

Pedals

Wellgo nylon platform

Groupset
Rear Derailleur

Shimano Acera M360

Front Derailleur

Shimano M190

Crank

Shimano M171, 42/34/24

Shifters

Shimano Altus M310, 8 speed

Cassette

Shimano HG31, 11-32, 8 speed

Brakes

Tektro HDC 300 hydraulic disc brakes

Type: Tektro Hydraulic Disc

Wheels
Tires

Bontrager LT3, 26x2.0"

Rider Notes
Riders Also Viewed

First added June 29

Last updated June 29

Not listed for 3,256 days