Bike details

Overview

Key information split into simple groups.

Bike summary

  • Frame Aluminum
  • Wheels 26"
  • Groupset Acera, Altus
  • Suspension Rigid
  • Drivetrain 3 × 8
  • Brakes Mechanical Disc

Parts list

Components

Main components, grouped by system.

Bike components

Frame

Frame

Alpha Silver Aluminum w/semi-integrated head tube, rack & fender mounts, disc compatible dropouts, replaceable derailleur hanger

Drivetrain

Rear Derailleur

Shimano Acera

Front Derailleur

Shimano Altus

Shift Levers

Shimano Altus, 8 speed

Cassette

Shimano HG31 11-32, 8 speed

Crank

Shimano M171, 42/34/24

Pedals

Wellgo nylon platform

Wheels

Rims

Formula DC20 alloy front hub; Formula DC22 alloy rear hub w/Bontrager AT-650 32-hole double-walled disc rims

Tires

Bontrager LT3, 26x2.0"

Brakes

Brakes

Tektro Novela mechanical disc w/Shimano Altus levers

Cockpit

Stem

Bontrager SSR, 31.8mm, 10 degree

Handlebar

Bontrager Low Riser, 31.8mm, 15mm rise, 9 degree sweep

Headset

1-1/8" threadless

Seat

Saddle

Bontrager Evoke 1

Seatpost

Bontrager SSR, 31.6mm, 12mm offset

Fit data

Geometry

Numbers for sizing and ride feel.

Size13"16"18"19.5"21"22.5"
Wheels26"26"26"26"26"26"

About this model

3900 Disc is part of the Trek 3900 model. 20 bikes variations carry this model name so far. Take a sneak peek at all Trek 3900 bikes models from 2013, by clicking here.

Safety

When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.

Crosscountry bikes average price

If you want to purchase a solid Crosscountry bike, it is important to know that the average cost is 1905$. However, even though the average price of a Crosscountry bike is lower, you might still be able to get a top-quality bike. As a general rule of thumb, you should always read reviews about the bike and its components before buying it to ensure you don’t pay too much.

3900 Disc components

Wheels

When it comes to wheels, the 3900 Disc bike is equipped with the 26″ aluminum model. Being a little smaller, these wheels will fit both small and tall riders. However, you will need increased suspension than in the case of 29″ wheels.

Brakes

For your safety, it is important to have quality breaks on your bike. Trek 3900 Disc has Mechanical Disc brakes installed. These brakes are also very popular, and a lot cheaper than hydraulic disk brakes. However, performance-wise there is room for improvement.