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 2011 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.

2011 GT Slammer33T · 13T
Ratio2.54:1
Estimated speed at 90 RPMGear13.7 mph

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.

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.
Print / PDFCSV
Specification
2009 GT Slammer
2011 GT Slammer
Overview
Model Year
2009
2011
Brand
GT
GT
Model
Slammer
Slammer
Bicycle Type
BMX
BMX
Original MSRP
$259.99
Not documented
Colors
Brown/Yellow
White, Yellow
Sizes
19.5" TT
—
Weight
—
—
Frameset
Frame Construction
TIG-welded
Steel
Frame Material
High Tensile Steel
Steel
Fork
GT Freestyle
GT Freestyle
Fork Material
High-tensile steel, unicrown crown
—
Drivetrain
Component Group
BMX
BMX Mix
Crankset
Steel One Piece, 36 teeth
Forged steel, 33T teeth
Bottom Bracket
Steel
Loose ball
Cassette
Freewheel
Dnp
Rear Cogs
1-speed, 14 teeth
13 teeth
Chain
KMC Z510
KMC Z510
Pedals
GT Jump design, resin
GT Jump design
Brakes
Brakes
Tektro 907 U-brake brakes, Tektro 289A levers
Rush 900D front/Rush 933D rear brakes, Tektro 289A levers
Cockpit & Contact Points
Headset
1 1/8" TH
1 1/8" Threadless
Handlebar
GT dirt/street Hi-Ten
GT dirt/street steel
Handlebar Extensions
Not included
Not included
Stem
GT Freestyle aluminum
GT freestyle drop
Saddle
GT freestyle
GT Slim Mini Street
Seatpost
Steel, 25.4mm diameter
Steel, 25.4mm diameter
Wheels & Tires
Hubs
Steel 14mm axle
Steel
Rims
Alex G303, 48-hole
Alex G303, 32-hole/36-hole
Spokes
14ga. (2.0mm)
14ga. (2.0mm)
Spoke Nipples
Brass
Brass
Front Tire
20 x 2.10" GT Air Bags
20 x 2.1" GT Air Bags
Wheel Size
20" wheels
20" wheels

Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.

Campaign
Scroll to Top