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 Slammer and 2012 GT Slammer.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Ratio2.54:1
Estimated speed at 90 RPMGear
Uses front tire 20×2.1; rear size isn’t listed.
Ratio2.54:1
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
2011 GT Slammer
2012 GT Slammer
Overview
Model Year
2011
2012
Brand
GT
GT
Model
Slammer
Slammer
Bicycle Type
BMX
BMX
Colors
White, Yellow
Satin Green, Satin White
Sizes
—
One Size
Weight
—
—
Frameset
Frame Construction
Steel
—
Frame Material
Steel
Straight Guage Hi-Ten
Fork
GT Freestyle
GT Hi-Ten
Drivetrain
Component Group
BMX Mix
—
Crankset
Forged steel, 33T teeth
GT 3-pc 165mm 33t
Bottom Bracket
Loose ball
Sealed Mid
Cassette
Dnp
Odyssey Cro-Mo 13t
Rear Cogs
13 teeth
—
Chain
KMC Z510
KMC Z410
Pedals
GT Jump design
GT Expert Plastic
Brakes
Brakes
Rush 900D front/Rush 933D rear brakes, Tektro 289A levers
C-Star U-Brake
Cockpit & Contact Points
Headset
1 1/8" Threadless
Fsa
Handlebar
GT dirt/street steel
GT Freestyle
Handlebar Extensions
Not included
—
Stem
GT freestyle drop
GT Freestyle
Saddle
GT Slim Mini Street
GT Street Rail
Seatpost
Steel, 25.4mm diameter
Steel 25.4 mm
Wheels & Tires
Hubs
Steel
steel Steel 36h 14mm FW
Rims
Alex G303, 32-hole/36-hole
—
Spokes
14ga. (2.0mm)
—
Spoke Nipples
Brass
—
Front Tire
20 x 2.1" GT Air Bags
GT Air Bags 2.1
Wheel Size
20" wheels
—
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.