Velopedia Bicycle Archive
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Compare published geometry, gearing and specifications for up to three bicycles.
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1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Data limitation
No geometry is recorded for 2004 GT Power Series Jr. and 2006 GT Power Series Jr..
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Ratio2.53:1
Speed unavailable: wheel or tire size is missing or unclear.
Ratio2.60:1
Speed unavailable: wheel or tire size is missing or unclear.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
Specification
2004 GT Power Series Jr.
2006 GT Power Series Jr.
Overview
Model Year
2004
2006
Brand
GT
GT
Model
Power Series Jr.
Power Series Jr.
Bicycle Type
BMX
BMX
Original MSRP
$299.99
$369.99
Colors
Blue
Team Blue/Silver two tone
Sizes
Junior
20" wheel
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
6061 T6 aluminum
6061 T6 aluminum
Fork
GT
GT BMX design
Fork Material
Chromoly, unicrown crown
Aluminum/chromoly
Drivetrain
Component Group
—
BMX
Crankset
3-piece aluminum, 38 teeth
AC Mini LE forged aluminum 3pc., 39 teeth
Bottom Bracket
Sealed cartridge
European size sealed cartridge bearing
BB Shell Width
68mm English
—
Rear Cogs
1-speed, 15 teeth
1-speed, 15 teeth
Chain
KMC Z30, 1/2 x 1/8"
KMC Z610
Pedals
Aluminum
Aluminum body with bolt on aluminum cage, Cr-Mo axle
Brakes
Brakes
Tektro 926A Mini V rear brakes, Tektro 316A rear levers
Alloy side-pull caliper front/Pro Max, MV-75, Mini V-brake, cold forged aluminum rear brakes, Mini BMX design levers
Cockpit & Contact Points
Headset
1" Semi integrated threadless
1" FSA Orbit IS-2A
Handlebar
GT Mini BMX
GT BMX design, aluminum, 4.5" rise
Stem
GT Mini Piston
GT Mini Piston design, cold forged aluminum
Saddle
GT Mini
GT mini design, padded with integrated aluminum post
Seatpost
Aluminum, 22.2mm (7/8 inch) diameter
Aluminum, 22.2mm (7/8 inch) diameter
Wheels & Tires
Hubs
GT Mini
GT BMX race design, aluminum body, sealed cartridge bearings
Rims
Alex DR-13, 28-hole
Sun M13-II, double wall, aluminum, 28 hole, eyelets, 28-hole
Spokes
Steel, 15ga. (1.8mm) straight gauge
15ga. (1.8mm) Straight Gauge
Spoke Nipples
Aluminum nipples
Aluminum nipples
Front Tire
20 x 1 1/8" IRC Siren
20 x 1-1/8" Kenda Krankit
Wheel Size
20" wheels
20" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.