Bicycle Archive · Specification report

2012 GT Mach One Jr. CB

Velopedia Archive ID 2023661

Overview

Model year	2012
Brand	GT
Model	Mach One Jr. CB
Bicycle type	Youth
Archive ID	2023661
Colors	Satin Blue, Satin White
Sizes	One Size

Frameset

Frame material	Hi-Ten
Fork	GT Hi-Ten

Drivetrain

Crankset	Steel 127mm 33t
Bottom bracket	American BB
Cassette	KT Cro-Mo 16t
Chain	KMC Z410
Pedals	GT Mini Plastic

Brakes

Brakes	Promax V-Brake

Cockpit & contact points

Headset	Threaded 1"
Handlebar	Steel
Stem	GT Race
Saddle	GT Mach 1 Mini Rail
Seatpost	Steel 25.4 mm

Wheels & tires

Hubs	steel KT Coaster 28h
Front tire	GT Wing 2.1

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