Velopedia Bicycle Archive
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Compare published geometry, gearing and specifications for up to three bicycles.
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At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Data limitation
No geometry is recorded for 2005 GT Power Series Pro and 2007 GT Power Series Pro.
- Data limitation
Only 2005 GT Power Series Pro has enough published drivetrain data for gearing calculations.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Ratio2.69:1
Estimated speed at 90 RPMGear
Rear tire: 20×1.75.
Gearing unavailable for this size.
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
2005 GT Power Series Pro
2007 GT Power Series Pro
Overview
Model Year
2005
2007
Brand
GT
GT
Model
Power Series Pro
Power Series Pro
Bicycle Type
BMX
BMX
Original MSRP
$279.99
$279.99
Colors
Factory Blue
Blue/Black
Sizes
Pro
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
Chromoly, unicrown crown
Drivetrain
Component Group
—
BMX Mix
Crankset
GT Tubular , 43 teeth
GT Tubular Cr-Mo 3pc.
Bottom Bracket
Loose ball
Steel, Ball type
Rear Cogs
1-speed, 16 teeth
1-speed, 16 teeth
Chain
KMC Z610, 1/2 x 1/8"
KMC Z610
Pedals
Aluminum platform
GT BMX platform
Brakes
Brakes
Tektro 924AL rear brakes, Tektro 319A rear levers
Alloy side-pull caliper front/Tektro, BX-310 rear brakes, Tektro 319A levers
Cockpit & Contact Points
Headset
1 1/8" integrated Tange Seiki Fatty 22
1 1/8" threadless Tange Seiki FATTY 22
Handlebar
Hi-tensile
GT BMX Race Cruiser Hi-Ten
Handlebar Extensions
—
Not included
Stem
Aluminum
GT BMX Race
Saddle
GT BMX Pro Lite
GT Pro Lite
Seatpost
Aluminum micro-adjust
Alloy Micro adjust, 27.0mm diameter
Wheels & Tires
Hubs
GT aluminum
Front: GT BMX sealed, Rear: BMX Race cassette
Rims
Alex G303
Alex G303, 36-hole
Spokes
14ga. (2.0mm) straight gauge
14ga. (2.0mm) straight gauge
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
20 x 2.125" IRC Siren
20 x 1.75" Kenda Small Block Eight
Rear Tire
20 x 1.75" IRC Siren
20 x 1.95" Kenda Small Block Eight
Wheel Size
20" wheels
20" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.