Bicycle Archive · Specification report

2004 Diamondback Octane 20

Velopedia Archive ID 31701

Overview

Model year	2004
Brand	Diamondback
Model	Octane 20
Bicycle type	Juvenile mountain bike, suspension
Archive ID	31701
Original MSRP	$165.00
Colors	Black/Red (Boys), Periwinkle/Silver (Girls)
Sizes	20", Boys and Girls

Frameset

Frame construction	TIG-welded
Frame material	Aluminum
Fork	SR Suntour M-2000, 20", 30mm
Fork material	Aluminum, single crown
Rear shock	N/A

Drivetrain

Component group	Mountain Mix
Shifters	Shimano Revo, Right Only
Front derailleur	N/A
Rear derailleur	Shimano Tourney TX-30
Crankset	OPC w/chainguard
Bottom bracket	One piece
Rear cogs	6-speed, 14 - 28 teeth
Chain	KMC, 1/2 x 3/32"
Pedals	BMX style resin

Brakes

Brakes	Coaster w/aluminum linear-pull rear brakes, resin/aluminum, w/reach adjust rear levers

Cockpit & contact points

Headset	1 1/8" Aheadset
Handlebar	Jr. ATB Riser
Handlebar extensions	Not included
Stem	Alloy, adjustable rise
Saddle	DB Jr. ATB Padded
Seatpost	Steel Post

Wheels & tires

Hubs	Front: Steel, nutted, Rear: steel, coaster brake
Rims	Alloy MTB, 36-hole
Spokes	UCP, 14ga. (2.0mm) straight gauge
Front tire	20 x 2.00" Jr ATB
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on November 13, 2026.