- Frame
- Aluminum
- Groupset
- Comfort Mix
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At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Data limitation
No geometry is recorded for 2008 GT Timberline and 2007 GT Timberline.
- Data limitation
Only 2008 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.
Lowest0.82:1Highest3.43:1Total range416%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 26×1.95; rear size isn’t listed.
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
2008 GT Timberline
2007 GT Timberline
Overview
Model Year
2008
2007
Brand
GT
GT
Model
Timberline
Timberline
Bicycle Type
Comfort/commuter
Comfort/commuter
Original MSRP
$349.99
$359.99
Colors
—
—
Sizes
S, M, L, XL
S, M, L, XL, XXL, women's small, women's medium
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Aluminum
Aluminum
Fork
SR Suntour NEX-4110
SR NEX -4000
Fork Material
Aluminum, single crown
Steel/aluminum, single crown
Drivetrain
Component Group
Comfort Mix
Comfort Mix
Shifters
Shimano Revo 7spd Twist
Shimano C-50 twist shifter
Front Derailleur
Shimano C-050
Shimano C-050
Rear Derailleur
Shimano TX-70
Shimano TX-70
Crankset
Suntour NEX 200, 28/38/48 teeth
Suntour NEX 200
Bottom Bracket
Square Taper
Sealed mech w/ boron axle
Cassette
Shimano Hyperglide
—
Rear Cogs
7-speed, 14 - 34 teeth
7-speed, 14 - 34 teeth
Chain
Uniglide
Uniglide
Pedals
Nylon Comfort
Nylon Comfort
Brakes
Brakes
Linear Pull brakes, Tektro alloy levers
Tektro Direct pull brakes, Alloy levers
Cockpit & Contact Points
Headset
1 1/8" sealed
1 1/8" threadless sealed mech
Handlebar
Aluminum riser
Anatomic
Handlebar Extensions
Not included
Not included
Stem
Adjustable quill-style
Adjustable quill-style
Saddle
—
GT Comfort
Seatpost
Aluminum suspension
Aluminum Suspension
Wheels & Tires
Hubs
Alloy QR
Alloy QR
Rims
Alloy Double Wall
Alloy ATB
Spokes
Stainless steel, 14ga. (2.0mm)
Stainless steel, 14ga. (2.0mm) straight gauge
Spoke Nipples
—
Brass CP
Front Tire
26 x 1.95"
26 x 1.90" Tioga City Slicker
Wheel Size
26" wheels
26" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.