VelopediaBicycle Archive ยท Specification report

2010 Trek 3900 Disc

Velopedia Archive ID 19946

Overview

Model year2010
BrandTrek
Model3900 Disc
Bicycle typeMountain bike, front suspension
Archive ID19946
Original MSRP$529.99
ColorsMatte Black, Matte Orange, Special Edition Matte White
Sizes13", 16", 18", 19.5", 21", 22.5"

Frameset

Frame constructionTIG-welded
Frame materialAlpha White Aluminum
ForkSR Suntour SF9 XCT V2, 100mm travel
Fork materialSingle crown
Rear shockN/A

Drivetrain

Component groupMountain Mix
ShiftersShimano EF-50
Front derailleurShimano C051
Rear derailleurShimano M-360
CranksetShimano M191, 42/34/24 teeth
CassetteSRAM PG-830
Rear cogs8-speed, 11 - 32 teeth
PedalsWellgo Nylon Platform

Brakes

BrakesProMax Mechanical Disc brakes, Shimano EF-50 levers

Cockpit & contact points

Headset1 1/8" threadless VP-A68-TK
HandlebarBontrager Approved Riser
Handlebar extensionsNot included
StemBontrager Approved
SaddleBontrager SSR
SeatpostBontrager SSR, 31.6mm diameter

Wheels & tires

HubsFront: Formula Alloy DC20, Rear: Shimano FH-M475 disc
RimsBontrager 550
Front tire26 x 2.00" Bontrager LT-3
Wheel size26" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 4, 2026.