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 2011 GT Compe and 2009 GT Compe.
- Gearing
2009 GT Compe has a 9% lower climbing ratio than 2011 GT Compe.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Ratio2.78:1
Estimated speed at 90 RPMGear
Uses front tire 20×2.1; rear size isn’t listed.
Ratio2.54:1
Estimated speed at 90 RPMGear
Uses front tire 20×2.1; rear size isn’t listed.
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
2011 GT Compe
2009 GT Compe
Overview
Model Year
2011
2009
Brand
GT
GT
Model
Compe
Compe
Bicycle Type
BMX
BMX
Original MSRP
Not documented
$369.99
Colors
Black, Teal
Green/White, Gray/Oatmeal
Sizes
—
20" TT
Weight
—
—
Frameset
Frame Construction
Steel
TIG-welded
Frame Material
Steel
Chromoly downtube
Fork
Cromo
GT Freestyle
Fork Material
Steel
Hi-tensile steel/chromoly steerer, unicrown crown
Drivetrain
Component Group
BMX Mix
BMX
Crankset
CroMO 3 piece, 25t teeth
GT Tubular Cr-Mo 3pc., 33 teeth
Bottom Bracket
Mid size sealed bearings
Mid BB
Cassette
Cassette cog
Freewheel
Rear Cogs
9 teeth
1-speed, 13 teeth
Chain
KMC Z510
KMC Z510
Pedals
GT Jump design
GT Dirt/Street platform
Brakes
Brakes
Tektro Caliper front/Tektro FX340R rear brakes, Tektro XL320 levers
Tektro 907 U-brake brakes, Tektro 299A levers
Cockpit & Contact Points
Headset
1 1/8" Threadless
1 1/8" Tange Seiki Fatty 22
Handlebar
GT dirt/street steel
GT dirt/street Hi-Ten
Handlebar Extensions
Not included
Not included
Stem
GT freestyle drop
GT FS design
Saddle
GT Slim Mini Street
Velo mini street
Seatpost
Steel, 25.4mm diameter
Aluminum, 25.4mm diameter
Wheels & Tires
Hubs
Front: steel, Rear: GT Alloy
Steel 14mm axle
Rims
Alex G303, 32-hole/36-hole
Alex G303, 48-hole
Spokes
14ga. (2.0mm)
14ga. (2.0mm)
Spoke Nipples
Brass
Brass
Front Tire
20 x 2.1" Kenda Ko-Rolla
20 x 2.10" Kenda Kiniption
Wheel Size
20" wheels
20" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.