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.
- Identity & price
These bicycles are categorized differently: 2007 GT Timberline is City & Commuter; 2006 GT Timberline is Mountain.
- Data limitation
No geometry is recorded for 2007 GT Timberline and 2006 GT Timberline.
- Data limitation
Only 2006 GT Timberline has enough published drivetrain data for gearing calculations.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Gearing unavailable for this size.
Lowest0.82:1Highest3.43:1Total range416%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 26×2.1; 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.
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
2007 GT Timberline
2006 GT Timberline
Overview
Model Year
2007
2006
Brand
GT
GT
Model
Timberline
Timberline
Bicycle Type
Comfort/commuter
Mountain bike, front suspension
Original MSRP
$359.99
$329.99
Colors
—
—
Sizes
S, M, L, XL, XXL, women's small, women's medium
S, M, L, XL
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Aluminum
7000 aluminum
Fork
SR NEX -4000
SR NEX -4000
Fork Material
Steel/aluminum, single crown
Steel/aluminum
Drivetrain
Component Group
Comfort Mix
Mountain Mix
Shifters
Shimano C-50 twist shifter
Shimano 7 speed C-50 twist shifter
Front Derailleur
Shimano C-050
Shimano FD-C050
Rear Derailleur
Shimano TX-70
Shimano Tourney TX-50
Crankset
Suntour NEX 200
Suntour NEX 200, 28/38/48 teeth
Bottom Bracket
Sealed mech w/ boron axle
Semi-Cartridge
Rear Cogs
7-speed, 14 - 34 teeth
7-speed, 14 - 34 teeth
Chain
Uniglide
Shimano CN-UG50
Pedals
Nylon Comfort
Dual surface nylon comfort pedal
Brakes
Brakes
Tektro Direct pull brakes, Alloy levers
Direct pull, with 110 mm arms brakes, Alloy, for direct pull levers
Cockpit & Contact Points
Headset
1 1/8" threadless sealed mech
1 1/8" sealed mech
Handlebar
Anatomic
30mm Riser 6degree bend, anatomically sized
Handlebar Extensions
Not included
—
Stem
Adjustable quill-style
Adjustable, 55 degree range of movement with 2-bolt face plate
Saddle
GT Comfort
GT Comfort, with reflective back, plushskin cover and elastomer bumpers
Seatpost
Aluminum Suspension
Aluminum Suspension with Micro Adjust
Wheels & Tires
Hubs
Alloy QR
Front: Alloy QR, Rear: Alloy QR, freewheel
Rims
Alloy ATB
Alloy ATB
Spokes
Stainless steel, 14ga. (2.0mm) straight gauge
Stainless steel, 14ga. (2.0mm)
Spoke Nipples
Brass CP
Brass CP
Front Tire
26 x 1.90" Tioga City Slicker
26 x 2.10" GT Guardian with Kevlar flat protection
Wheel Size
26" wheels
26" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.