VelopediaBicycle Archive · Specification report

2004 Diamondback Viper

Velopedia Archive ID 31727

Overview

Model year2004
BrandDiamondback
ModelViper
Bicycle typeBMX
Archive ID31727
Original MSRP$132.00
ColorsCovert Black, Gunsmoke Grey
Sizes20"

Frameset

Frame constructionTIG-welded
Frame materialHi-tensile steel
Fork materialChromoly, unicrown crown
Rear shockN/A

Drivetrain

Component groupN/A
ShiftersN/A
Front derailleurN/A
Rear derailleurN/A
Crankset1-piece 175mm, 44 teeth
Bottom bracketLoose ball
BB shell widthAmerican
Rear cogs1-speed, 16 teeth
ChainKMC Z410, 1/2 x 1/8"
PedalsResin, platform

Brakes

BrakesRush Alloy Linear Pull rear brakes, Rush Alloy rear levers

Cockpit & contact points

Headset1 1/8" threadless FSA
HandlebarDb Expert
Handlebar extensionsN/A
StemAluminum
SaddleDiamondback Padded
SeatpostSteel, 25.4mm diameter

Wheels & tires

HubsSteel
RimsAlex C303, 36-hole
Spoke nipplesBrass nipples
Front tireFront: 20 x 2.125" Comp III style, Rear: 20 x 1.75" Comp III style
Wheel size20" wheels

Geometry · Legacy reference

Top tube488.9 mm
Head-tube angle74°
Seat-tube angle70°
Chainstay / rear center368.3 mm
Wheelbase957.6 mm
Fork offset / rake30.5 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 29, 2026.