Bike details

Overview

Key information split into simple groups.

Bike summary

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

Parts list

Components

Main components, grouped by system.

Bike components

Frame

Frame

Alpha White Aluminum w/externally relieved head tube, bi-axial down tube, disc compatible dropouts

Drivetrain

Rear Derailleur

Shimano Acera

Front Derailleur

Shimano C050

Shift Levers

Shimano EF50, 8 speed

Cassette

SRAM PG830 11-32, 8 speed

Crank

SR Suntour XCC-T102 42/34/24

Pedals

Nylon platform

Wheels

Rims

Alloy front hub, Shimano M475 rear hub; Matrix 550 rims w/brushed sidewalls

Tires

Bontrager Connection Trail, 26x2.0"; 27 tpi

Brakes

Brakes

Promax, mechanical disc w/Shimano EF50 levers

Cockpit

Stem

Bontrager Approved, 25 degree

Handlebar

Bontrager Approved, 30mm rise

Headset

VP-A76C-TK, 1 1/8" semi-cartridge, sealed

Seat

Saddle

Bontrager Approved

Seatpost

Bontrager SSR, 20mm offset

Fit data

Geometry

Numbers for sizing and ride feel.

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

Model Overview

3900 Disc belongs to the Trek 3900 model. There are 20 bikes that carry this model name. Check out the entire range from 2009 of this model, by clicking this link.

Safety

Take safety seriously when you ride your bike, and always wear your helmet. Moreover, don’t ride on the sidewalk. This is actually against the law in some states and can be dangerous for both you and pedestrians.

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 if your budget is less than the average, you might still be able to get a top-quality Crosscountry bike. In short, before purchasing your ideal bike do some research about its components, and also check for reviews online.

3900 Disc components

Wheels size

When leaving the production line, the 3900 Disc model has 26″ aluminum wheels. The 26″ wheels are lighter than the 27.5 or 29″ wheels. However, you will need increased suspension than in the case of 29″ wheels.

Brakes

Stopping the bike when needed, it’s essential for your safety. This bike has Mechanical Disc brakes. They deliver good performance and cost less than hydraulic disk brakes. However, performance-wise there is room for improvement.