Bicycle Archive · Specification report

2008 GT Mach One Expert

Velopedia Archive ID 13938

Overview

Model year	2008
Brand	GT
Model	Mach One Expert
Bicycle type	BMX
Archive ID	13938
Original MSRP	$179.99
Colors	Silver, Red
Sizes	One size fits all

Frameset

Frame construction	TIG-welded
Fork	GT BMX
Fork material	Unicrown
Rear shock	N/A

Drivetrain

Component group	BMX
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	GT Forged steel 1pc.
Bottom bracket	Steel, ball type
Rear cogs	1-speed, 16 teeth
Chain	KMC Z-410
Pedals	Jr. BMX design, resin

Cockpit & contact points

Headset	1 1/8" VP-A74F HD
Handlebar	GT BMX
Handlebar extensions	Not included
Stem	Aluminum
Saddle	GT JR. BMX
Seatpost	Steel

Wheels & tires

Hubs	Front: steel, Rear: Steel coaster
Rims	Alloy, 36-hole
Spokes	14ga. (2.0mm)
Spoke nipples	Brass
Front tire	20" GT Brody Knob
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 6, 2026.