Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. Data limitation

    No geometry is recorded for 2009 GT Slammer and 2012 GT Slammer.

Gearing comparison

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

2009 GT Slammer36T · 14T · 1-speed
Ratio2.57:1
Estimated speed at 90 RPMGear13.9 mph

Uses front tire 20×2.1; rear size isn’t listed.

2012 GT Slammer33T · 13T
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.

Try other gearing

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.
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Specification
2009 GT Slammer
2012 GT Slammer
Overview
Model Year
2009
2012
Brand
GT
GT
Model
Slammer
Slammer
Bicycle Type
BMX
BMX
Original MSRP
$259.99
Not documented
Colors
Brown/Yellow
Satin Green, Satin White
Sizes
19.5" TT
One Size
Weight
—
—
Frameset
Frame Construction
TIG-welded
—
Frame Material
High Tensile Steel
Straight Guage Hi-Ten
Fork
GT Freestyle
GT Hi-Ten
Fork Material
High-tensile steel, unicrown crown
—
Drivetrain
Component Group
BMX
—
Crankset
Steel One Piece, 36 teeth
GT 3-pc 165mm 33t
Bottom Bracket
Steel
Sealed Mid
Cassette
Freewheel
Odyssey Cro-Mo 13t
Rear Cogs
1-speed, 14 teeth
—
Chain
KMC Z510
KMC Z410
Pedals
GT Jump design, resin
GT Expert Plastic
Brakes
Brakes
Tektro 907 U-brake brakes, Tektro 289A levers
C-Star U-Brake
Cockpit & Contact Points
Headset
1 1/8" TH
Fsa
Handlebar
GT dirt/street Hi-Ten
GT Freestyle
Handlebar Extensions
Not included
—
Stem
GT Freestyle aluminum
GT Freestyle
Saddle
GT freestyle
GT Street Rail
Seatpost
Steel, 25.4mm diameter
Steel 25.4 mm
Wheels & Tires
Hubs
Steel 14mm axle
steel Steel 36h 14mm FW
Rims
Alex G303, 48-hole
—
Spokes
14ga. (2.0mm)
—
Spoke Nipples
Brass
—
Front Tire
20 x 2.10" 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.

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