Bicycle Archive · Specification report

2007 GT Power Series Jr.

Velopedia Archive ID 16139

Overview

Model year	2007
Brand	GT
Model	Power Series Jr.
Bicycle type	BMX
Archive ID	16139
Original MSRP	$399.99
Colors	Blue/Black
Sizes	20" wheel

Frameset

Frame construction	TIG-welded
Frame material	6061 T6 aluminum
Fork	GT BMX design
Fork material	Aluminum/chromoly, unicrown crown
Rear shock	N/A

Drivetrain

Component group	BMX Mix
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	GT forged aluminum 3pc.
Bottom bracket	Euro cartridge
Rear cogs	1-speed, 14 teeth
Chain	KMC Z610
Pedals	Aluminum body with bolt on aluminum cage

Brakes

Brakes	Alloy side-pull caliper front/Tektro, 926AL rear brakes, Mini BMX levers

Cockpit & contact points

Headset	1" integrated FSA Orbit IS-2A
Handlebar	GT BMX aluminum
Handlebar extensions	Not included
Stem	GT Mini Piston
Saddle	GT Mini
Seatpost	Aluminum, 22.2mm (7/8 inch) diameter

Wheels & tires

Hubs	Front: GT BMX sealed, Rear: BMX Race cassette
Rims	Sun M13-II, 28-hole
Spokes	15ga. (1.8mm) straight gauge
Spoke nipples	Aluminum nipples
Front tire	20 x 1-3/8" Kenda Small Block Eight
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 25, 2026.