Velopedia Bicycle Archive
Compare Bicycles
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 Stomper 20 and 2009 GT Stomper 20.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest1.29:1Highest2.57:1Total range200%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 20×1.95; rear size isn’t listed.
Lowest1.29:1Highest2.57:1Total range200%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 20×1.95; 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 Stomper 20
2009 GT Stomper 20
Overview
Model Year
2011
2009
Brand
GT
GT
Model
Stomper 20
Stomper 20
Bicycle Type
Juvenile mountain bike, suspension
Juvenile
Original MSRP
Not documented
$299.99
Colors
Gloss black, Ano White
Red
Sizes
—
One size fits all
Weight
—
—
Frameset
Frame Construction
Aluminum
TIG-welded
Frame Material
6061 aluminum
GT 6061 Aluminum
Fork
SR M 2000, 75mm travel
SR Suntour M2000, 75mm travel
Fork Material
—
Alloy, single crown
Drivetrain
Component Group
Mountain Mix
Juvenile Mix
Shifters
Shimano Revo twist
SRAM MRX
Rear Derailleur
Shimano TX-30
Shimano TX30
Crankset
Cotterless aluminum, 36T teeth
Cotterless aluminum, 36 teeth
Bottom Bracket
3 piece square taper
3-piece
Cassette
Shimano
Shimano
Rear Cogs
7-speed, 14 - 28 teeth
7-speed, 14 - 28 teeth
Chain
Uniglide
Uniglide
Pedals
High Impact nylon platform
High Impact nylon platform
Brakes
Brakes
Tektro linear pull brakes, alloy short reach levers
Tektro linear brakes, alloy short reach levers
Cockpit & Contact Points
Headset
Aheadset
1 1/8" Aheadset
Handlebar
Alloy Riser
Riser
Handlebar Extensions
Not included
Not included
Stem
Ahead alloy ATB
Alloy
Saddle
Boys Anatomic MTN
Boys Anatomic MTN
Seatpost
Alloy
Alloy
Wheels & Tires
Hubs
Alloy QR
Alloy
Rims
ATB aluminum
Aluminum
Spokes
Stainless, 14ga. (2.0mm)
14ga. (2.0mm)
Spoke Nipples
Brass
Brass
Front Tire
20 x 1.95" Kenda ATB Dual purpose
20 x 1.95" Kenda ATB Dual purpose
Wheel Size
20" wheels
20" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.