Bicycle Archive · Specification report

2011 GT Mach One Expert

Velopedia Archive ID 25122

Overview

Model year	2011
Brand	GT
Model	Mach One Expert
Bicycle type	BMX
Archive ID	25122
Colors	Silver, black

Frameset

Frame construction	Steel
Frame material	Hi Ten
Fork	GT BMX
Rear shock	N/A

Drivetrain

Component group	BMX Mix
Crankset	Forged 1 piece, 36T teeth
Bottom bracket	Steel
Cassette	Cog
Rear cogs	16 teeth
Chain	KMC Z410
Pedals	Jr. BMX design, resin

Cockpit & contact points

Headset	1 1/8" Threadless
Handlebar	GT BMX
Handlebar extensions	Not included
Stem	Gt Race
Saddle	GT BMX padded race
Seatpost	Steel, 25.4mm diameter

Wheels & tires

Hubs	Front: steel, Rear: Coaster Brake
Rims	Alloy, 36-hole
Spokes	14ga. (2.0mm)
Spoke nipples	Brass
Front tire	20 x 1.75" GT Wing design
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 7, 2026.