Bicycle Archive · Specification report

2002 Diamondback Octane 20

Velopedia Archive ID 91393

Overview

Model year	2002
Brand	Diamondback
Model	Octane 20
Bicycle type	Juvenile mountain bike, suspension
Archive ID	91393
Original MSRP	$179.99
Colors	Black, Blue
Sizes	20" Boys, 20" Girls

Frameset

Frame construction	TIG-welded
Frame material	Hi-tensile steel, oversize
Fork	RST 181 CL, 2.4" travel
Fork material	Hi-tensile steel, oversize, single triple-clamp crown
Rear shock	N/A

Drivetrain

Component group	Juvenile Mix
Shifters	Shimano Revo
Front derailleur	N/A
Rear derailleur	Shimano Tourney TY-22
Crankset	1-piece 5 1/2", 33 teeth
Bottom bracket	Sealed cartridge, one-piece spindle
BB shell width	American
Rear cogs	6-speed, 13 - 28 teeth
Chain	KMC Z-51, 1/2 x 3/32"
Pedals	Wellgo resin

Brakes

Brakes	Aluminum linear-pull brakes, aluminum linear-pull levers

Cockpit & contact points

Headset	1" steel
Handlebar	Steel, 30mm rise
Handlebar extensions	Not included
Stem	Steel
Saddle	Avenir Jr MTB
Seatpost	Aluminum, 25.6mm diameter

Wheels & tires

Hubs	Steel, nutted
Rims	Weinmann CN-520, 36-hole
Spokes	Chung Nan UCP, 14ga. (2.0mm) straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 1.95" Kenda K-850
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	464.8 mm
Head-tube angle	70°
Seat-tube angle	71°
Chainstay / rear center	381 mm
Wheelbase	883.9 mm
Fork offset / rake	38.1 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 28, 2026.