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 2008 GT Power Series Pro and 2009 GT Power Series Pro.
- Data limitation
Only 2009 GT Power Series Pro has enough published drivetrain data for gearing calculations.
- Identity & price
2008 GT Power Series Pro had an original MSRP $100 lower than 2009 GT Power Series Pro.
Original MSRP is the published list price when new, not today’s used-bike value.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Gearing unavailable for this size.
Ratio2.69:1
Estimated speed at 90 RPMGear
Rear tire: 20×1.75.
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
2008 GT Power Series Pro
2009 GT Power Series Pro
Overview
Model Year
2008
2009
Brand
GT
GT
Model
Power Series Pro
Power Series Pro
Bicycle Type
BMX
BMX
Original MSRP
$249.99
$349.99
Colors
Silver/Black
White/Black
Sizes
Pro
20" TT
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
GT 6061 Aluminum
6061-T6 aluminum
Fork
GT BMX
GT BMX
Fork Material
Hi-Ten w/ Cr-Mo, unicrown crown
Chromoly/Hi-ten, unicrown crown
Drivetrain
Component Group
BMX
BMX
Crankset
GT Tubular Cr-Mo 3pc.
GT Tubular Cr-Mo 3pc., 43 teeth
Bottom Bracket
Steel, ball type
Euro
Cassette
—
Freewheel
Rear Cogs
1-speed, 16 teeth
1-speed, 16 teeth
Chain
KMC Z610
KMC Z610
Pedals
BMX platform design, aluminum body, fixed pins
GT Alum Platform with cr-mo spindles
Brakes
Brakes
—
Tektro BX-310 rear brakes, Tektro 319A rear levers
Cockpit & Contact Points
Headset
1 1/8" Tange Seiki Fatty 22
1 1/8" Tange Seiki Fatty 22
Handlebar
GT BMX Race
GT BMX Race Hi-Ten
Handlebar Extensions
Not included
Not included
Stem
GT BMX Race
GT BMX Race
Saddle
GT Pro Lite
GT BMX Pro Lite
Seatpost
Alloy
Aluminum micro-adjust, 27.0mm diameter
Wheels & Tires
Hubs
GT aluminum sealed
GT aluminum sealed
Rims
Alex G303, 36-hole
Alex G303, 36-hole
Spokes
14ga. (2.0mm)
14ga. (2.0mm)
Spoke Nipples
Brass nipples
Brass
Front Tire
20" Kenda Small Block Eight
20 x 1.95" Kenda Small Block Eight
Rear Tire
—
20 x 1.75" 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.