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: 2003 GT Timberline is Mountain; 2005 GT Timberline is City & Commuter.
- Data limitation
No geometry is recorded for 2003 GT Timberline and 2005 GT Timberline.
- Gearing
2003 GT Timberline has a 14% lower climbing ratio than 2005 GT Timberline.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest0.71:1Highest3.00:1Total range425%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 26×2.1; rear size isn’t listed.
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
2003 GT Timberline
2005 GT Timberline
Overview
Model Year
2003
2005
Brand
GT
GT
Model
Timberline
Timberline
Bicycle Type
Mountain bike, front suspension
Comfort/commuter
Original MSRP
$299.00
$319.99
Colors
—
Silver, 2 Tone Sand, 2 Tone Silver
Sizes
L, M, S, womens medium, womens small, XL
XS, S, M, L, XL
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
7000 aluminum
7000 aluminum
Fork
SR XCC-D
SR Suntour NEX-4000
Fork Material
Aluminum, single crown
Aluminum, single crown
Drivetrain
Component Group
Mountain Mix
Mountain Mix
Shifters
SRAM MRX
Shimano ST-C050
Front Derailleur
Shimano C050
Shimano FD-C050
Rear Derailleur
Shimano C050
Shimano RD-C050
Crankset
Suntour XR-180, 24/34/42 teeth
Suntour NEX-200, 28/38/48 teeth
Bottom Bracket
Sealed
Semi-cartridge
Rear Cogs
7-speed, 14 - 34 teeth
7-speed, 14 - 34 teeth
Chain
Shimano CN-UG50, 1/2 x 3/32"
Shimano CN-UG50, 1/2 x 3/32"
Pedals
MTB nylon
Platform
Brakes
Brakes
Aluminum linear-pull brakes, aluminum linear-pull levers
Aluminum linear-pull brakes, aluminum front/aluminum linear-pull rear levers
Cockpit & Contact Points
Headset
1 1/8" threadless sealed mechanism
1 1/8" threadless Tien Hsin Zero Stack
Handlebar
Aluminum, rise
Riser
Handlebar Extensions
Not included
—
Stem
Aluminum, adjustable
Aluminum adjustable
Saddle
GT Comfort
GT Comfort
Seatpost
Aluminum, suspension
Aluminum micro-adjust
Wheels & Tires
Hubs
Aluminum QR
Aluminum, Q/R
Rims
Aluminum
Aluminum
Spokes
Stainless steel, 14ga. (2.0mm) straight gauge
Stainless steel, 14ga. (2.0mm) straight gauge
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
26 x 2.10" GT Guardian
26 x 2.10" GT Guardian
Wheel Size
26" wheels
26" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.