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 Aerostream and 2009 GT Aerostream.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Gearing unavailable for this size.
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 Aerostream
2009 GT Aerostream
Overview
Model Year
2011
2009
Brand
GT
GT
Model
Aerostream
Aerostream
Bicycle Type
Comfort/commuter
City/commuter
Original MSRP
Not documented
$429.99
Colors
Chocolate
Olive, Silver
Sizes
S, M, L
S, M, L
Weight
—
—
Frameset
Frame Construction
Aluminum
TIG-welded
Frame Material
7000 aluminum
Hydroformed aluminum
Fork
GT Strealmine
GT Streamline
Fork Material
—
Chromoly, unicrown crown
Drivetrain
Component Group
Commuter Mix
Commuter Mix
Shifters
Shimano Nexus
Shimano Nexus 3 Revo Twist
Crankset
Alloy 3 piece
Alloy 3-Piece
Bottom Bracket
Semi cartridge
Shimano Cartridge
Cassette
GT Belt Drive
Shimano
Rear Cogs
—
3-speed internal
Chain
GT Streamline Belt
Gates Belt
Pedals
Dual density platform
Dual density platform
Brakes
Brakes
Tektro V brakes, Shimano Nexus levers
Tektro V-brake brakes, Tektro 4-Finger w/Kraton rubber insert levers
Cockpit & Contact Points
Headset
1 1/8" Threaded
1 1/8" Threaded
Handlebar
GT Streamline alloy
GT Streamline alloy
Handlebar Extensions
Not included
Not included
Stem
GT Streamline quill
GT Streamline quill
Saddle
GT Streamline
GT Streamline
Seatpost
GT Alloy Micro Adjust
Alloy Micro Adjust
Wheels & Tires
Hubs
Front: alloy sealed mechanism, Rear: Shimano Nexus
Front: Alloy Sealed, Rear: Shimano Nexus 3 speed Internal Gear
Rims
700c Brushed singlewall alloy
Alloy
Spokes
Stainless, 14ga. (2.0mm)
Stainless, 14ga. (2.0mm)
Spoke Nipples
Brass
—
Front Tire
700 x 47c
700 x 47c
Wheel Size
700c wheels
700c wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.