Bicycle Archive · Specification report

2001 GT Thumper

Velopedia Archive ID 35483

Overview

Model year	2001
Brand	GT
Model	Thumper
Bicycle type	Freestyle/jumping
Archive ID	35483
Original MSRP	$549.99
Colors	Martian Green, Starlight Blue
Sizes	Pro

Frameset

Frame construction	TIG-welded
Frame material	Chromoly
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 chromoly, 44 teeth
Bottom bracket	Sealed cartridge
Rear cogs	1-speed, 16 teeth
Chain	KMC, 1/2 x 1/8"
Pedals	GT aluminum platform

Brakes

Brakes	Tektro FX-20 U brake rear brakes, Tektro 270-AX rear levers

Cockpit & contact points

Headset	1 1/8" threadless Tange Seiki STE
Handlebar	GT F.U.B.a.R.
Handlebar extensions	Not included
Stem	GT Johnson
Saddle	GT
Seatpost	GT aluminum micro-adjust

Wheels & tires

Hubs	GT Mohawk
Rims	Alex AL-MX22, 48-hole
Spokes	14g
Spoke nipples	Brass nipples
Front tire	20 X 2.10" GT LP-III
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 26, 2026.