Bicycle Archive · Specification report

2009 Diamondback Viper X

Velopedia Archive ID 18994

Overview

Model year	2009
Brand	Diamondback
Model	Viper X
Bicycle type	BMX
Archive ID	18994
Colors	Black, Red
Sizes	20.5" TT

Frameset

Frame construction	TIG-welded
Frame material	Chromoly seat tube/hi-ten steel
Fork material	High-tensile steel, unicrown crown
Rear shock	N/A

Drivetrain

Component group	BMX
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	1-piece chromoly, 44 teeth
Bottom bracket	Loose ball
Cassette	Freewheel
Rear cogs	1-speed, 16 teeth
Chain	KMC Z410, 1/2 x 1/8"
Pedals	DB Sound alloy w/traction pins

Brakes

Brakes	Rush U-brake w/SST DC Amplifier rear brakes, Rush 2-finger rear levers

Cockpit & contact points

Headset	1 1/8" FSA Threadless
Handlebar	Hi-Ten 2-piece
Handlebar extensions	Not included
Stem	Alloy 4-bolt
Saddle	DB BMX padded
Seatpost	Steel micro-adjust, 25.4mm diameter

Wheels & tires

Hubs	Aluminum 3/8" axle
Rims	Aluminum, 36-hole
Spokes	14ga. (2.0mm)
Front tire	Front: 20 x 2.125" Comp III style, Rear: 20 x 1.75" Comp III style
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 24, 2026.