Bicycle Archive · Specification report

1999 GT Speed Series

Velopedia Archive ID 89404

Overview

Model year	1999
Brand	GT
Model	Speed Series
Bicycle type	BMX
Archive ID	89404
Original MSRP	$715.99
Colors	Ball-Burnished
Sizes	Boys

Frameset

Frame construction	Welded
Frame material	6061 T6 aluminum
Fork	GT
Fork material	Chromoly, unicrown crown
Rear shock	N/A

Drivetrain

Component group	N/A
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	GT 3-piece aluminum
Bottom bracket	GT sealed bearing
Rear cogs	1-speed, 16 teeth
Chain	1/2 x 1/8"
Pedals	GT aluminum platform

Brakes

Brakes	Dia-Compe MX1, direct pull rear brakes, Dia-Compe MX-1 rear levers

Cockpit & contact points

Headset	1 1/8" threadless Aheadset SX-1
Handlebar	GT chromoly
Handlebar extensions	N/A
Stem	GT Piston Invet
Saddle	GT Drop Nose
Seatpost	GT aluminum micro-adjust

Wheels & tires

Hubs	GT Rhythm System sealed
Rims	GT Rhythm System aluminum
Spokes	Stainless steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	Front: 20 x 2.125" GT AA Pro, Rear: 20 x 1.75" GT AA Pro
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.