VelopediaBicycle Archive · Specification report

1998 GT Performer (Mag)

Velopedia Archive ID 71556

Overview

Model year1998
BrandGT
ModelPerformer (Mag)
Bicycle typeFreestyle/jumping
Archive ID71556
Original MSRP$394.00
ColorsBlack Rainbow, chrome-plated, lime green
SizesPro

Frameset

Frame constructionTIG-welded
Frame material4130 chromoly main triangle/hi-tensile steel rear stays
ForkGT
Fork materialChromoly, unicrown crown
Rear shockN/A

Drivetrain

Component groupN/A
ShiftersN/A
Front derailleurN/A
Rear derailleurN/A
CranksetGT 1-piece chromoly, 45 teeth
BB shell widthAmerican
Rear cogs1-speed
Chain1/2 x 1/8"
PedalsGT aluminum platforms

Brakes

BrakesDia-Compe Bulldog front/Tektro 990 rear

Cockpit & contact points

Headset1"
HandlebarGT Freestyle chromoly
Handlebar extensionsN/A
StemGT Piston
SaddleGT Freestyle
SeatpostGT chromoly

Wheels & tires

HubsGT 3-spoke mag
RimsGT 3-spoke mag
SpokesN/A
Spoke nipplesN/A
Front tire20 X 2.10" GT LP III
Wheel size20" wheels

Geometry · Legacy reference

Top tube508 mm
Head-tube angle73.5°
Seat-tube angle67.7°
Chainstay / rear center381 mm
Wheelbase927.1 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 9, 2026.