Bicycle Archive · Specification report

1999 GT Vertigo (02)

Velopedia Archive ID 84323

Overview

Model year	1999
Brand	GT
Model	Vertigo (02)
Bicycle type	Freestyle/jumping
Archive ID	84323
Original MSRP	$259.99
Colors	Black Rainbow, Candy Blue

Frameset

Frame construction	Welded
Frame material	Chromoly/hi-tensile steel
Fork	GT
Fork material	Hi-tensile steel, oversize, unicrown crown
Rear shock	N/A

Drivetrain

Component group	N/A
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	GT 1-piece chromoly, 43 teeth
Bottom bracket	One piece
Rear cogs	1-speed, 16 teeth
Chain	1/2 x 1/8"
Pedals	GT nylon platform

Brakes

Brakes	Dia-Compe Bulldog front/Tektro 909A rear brakes, alloy levers

Cockpit & contact points

Headset	1" steel w/SST Oryg detangler
Handlebar	GT
Handlebar extensions	N/A
Stem	GT Piston
Saddle	GT
Seatpost	Pillar, steel, 22.2mm (7/8 inch) diameter

Wheels & tires

Hubs	GT Mohawk
Rims	Weinmann Zac 30, 48-hole
Spokes	2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 1.95" GT Air Bags
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 12, 2026.