Velopedia Bicycle Archive
Compare Bicycles
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 2005 GT Power Series Expert and 2007 GT Power Series Expert.
- Gearing
2005 GT Power Series Expert has a 13% lower climbing ratio than 2007 GT Power Series Expert.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
- Identity & price
2005 GT Power Series Expert had an original MSRP $100 lower than 2007 GT Power Series Expert.
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.
Ratio2.63:1
Speed unavailable: wheel or tire size is missing or unclear.
Ratio3.00:1
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
2005 GT Power Series Expert
2007 GT Power Series Expert
Overview
Model Year
2005
2007
Brand
GT
GT
Model
Power Series Expert
Power Series Expert
Bicycle Type
BMX
BMX
Original MSRP
$299.99
$399.99
Colors
Factory Blue
Blue/Black
Sizes
Expert
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, unicrown crown
Drivetrain
Component Group
—
BMX Mix
Crankset
GT aluminum 3-piece, 42 teeth
GT forged aluminum 3pc., 42 teeth
Bottom Bracket
Loose ball
Euro cartridge
Rear Cogs
1-speed, 16 teeth
1-speed, 14 teeth
Chain
KMC Z610, 1/2 x 1/8"
KMC Z610
Pedals
Aluminum platform
Jr. BMX platform, aluminum
Brakes
Brakes
Tektro 926 Mini V rear brakes, Tektro 316A rear levers
Alloy side-pull caliper front/Tektro, 926AL rear brakes, Tektro 316A levers
Cockpit & Contact Points
Headset
1" threadless
1 1/8" integrated FSA Orbit IS-2
Handlebar
Aluminum
GT BMX aluminum
Handlebar Extensions
—
Not included
Stem
GT Mini Piston
GT BMX Race
Saddle
GT mini design
GT Mini
Seatpost
Aluminum pillar, 22.2mm (7/8 inch) diameter
Aluminum, 22.2mm (7/8 inch) diameter
Wheels & Tires
Hubs
GT aluminum
Front: GT BMX sealed, Rear: BMX Race cassette
Rims
Alex ALDR13
Sun M13-II, 32-hole
Spokes
15ga. (1.8mm) straight gauge
15ga. (1.8mm) straight gauge
Spoke Nipples
Brass nipples
Aluminum nipples
Front Tire
24 x 1 3/8" IRC Siren
20 x 1-3/8" Kenda Small Block Eight
Wheel Size
24" wheels
20" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.