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 2008 GT Compe.
- Data limitation
Only 2011 GT Compe 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.
Ratio2.78:1
Estimated speed at 90 RPMGear
Uses front tire 20×2.1; rear size isn’t listed.
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
2011 GT Compe
2008 GT Compe
Overview
Model Year
2011
2008
Brand
GT
GT
Model
Compe
Compe
Bicycle Type
BMX
BMX
Original MSRP
Not documented
$249.99
Colors
Black, Teal
Black/Carolina Blue, Khaki/Red
Sizes
—
One size fits all
Weight
—
—
Frameset
Frame Construction
Steel
TIG-welded
Frame Material
Steel
Chromoly downtube
Fork
Cromo
GT Freestyle
Fork Material
Steel
Unicrown
Drivetrain
Component Group
BMX Mix
BMX
Crankset
CroMO 3 piece, 25t teeth
GT Tubular Cr-Mo 3pc.
Bottom Bracket
Mid size sealed bearings
Ball type with 8 spline Cr-Mo axle
Cassette
Cassette cog
Dnp
Rear Cogs
9 teeth
1-speed, 14 teeth
Chain
KMC Z510
KMC Z410
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 BMX dirt/street
Handlebar Extensions
Not included
Not included
Stem
GT freestyle drop
GT FS design
Saddle
GT Slim Mini Street
Velo mini BMX freestyle
Seatpost
Steel, 25.4mm diameter
Alloy micro-adjust
Wheels & Tires
Hubs
Front: steel, Rear: GT Alloy
Steel shell w/ 14mm Axle
Rims
Alex G303, 32-hole/36-hole
Alex G303, 48-hole
Spokes
14ga. (2.0mm)
14ga. (2.0mm)
Spoke Nipples
Brass
Brass nipples
Front Tire
20 x 2.1" Kenda Ko-Rolla
20" 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.