Velopedia Bicycle Archive
Compare Bicycles
Compare published geometry, gearing and specifications for up to three bicycles.
Edit comparison
Add a bicycle
Search the Archive without leaving this comparison.
1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
No key difference could be established from the available data. Check the full table for the details.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest0.86:1Highest4.18:1Total range488%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 26×2.1; rear size isn’t listed.
Lowest0.86:1Highest3.82:1Total range445%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 26×2.1.
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
1998 GT Aggressor
1997 GT Aggressor
Overview
Model Year
1998
1997
Brand
GT
GT
Model
Aggressor
Aggressor
Bicycle Type
Mountain bike, front suspension
Mountain bike, front suspension
Original MSRP
$392.00
$430.00
Colors
Black, Orange
Grey, Red
Sizes
12.5", 14.5", 16", 18", 19", 20"
14.5", 16", 18", 20"
Weight
—
—
Frameset
Frame Construction
TIG-welded
Welded
Frame Material
Chromoly
Chromoly main triangle/hi-tensile steel rear stays
Fork
RST 261
RST 171B
Fork Material
Chromoly, triple-clamp crown
Aluminum/chromoly, triple-clamp crown
Drivetrain
Component Group
Mountain Mix
Shimano Alivio/Altus
Shifters
Shimano Alivio RapidFire Plus
Shimano Alivio MC12-C RapidFire Plus
Front Derailleur
Shimano Altus top-swing
Shimano Altus top-swing, bottom-pull/clamp-on 28.6 mm
Rear Derailleur
Shimano Alivio
Shimano AceraX
Crankset
SR/Suntour XR25, 24/34/46 teeth
Shimano Altus, 24/32/42 teeth
Bottom Bracket
Shimano BB-LP27
Shimano
BB Shell Width
68mm English
68mm English
Rear Cogs
7-speed, 11 - 28 teeth
7-speed, 11 - 28 teeth
Chain
Shimano CN-UG50, 1/2 x 3/32"
Shimano, 1/2 x 3/32"
Pedals
Resin
Steel cage
Brakes
Brakes
Dia-Compe VC-757 brakes, Dia-Compe DP-7 levers
Shimano Altus brakes, Shimano Alivio levers
Cockpit & Contact Points
Headset
1 1/8" sealed
1 1/8"
Handlebar
Flat
Aluminum
Handlebar Extensions
Not included
Not included
Stem
GT hi-rise
Chromoly
Saddle
GT
GT
Seatpost
Aluminum micro-adjust, 26.8mm diameter
Aluminum micro-adjust, 26.8 mm diameter
Wheels & Tires
Hubs
Aluminum, Q/R
Front: aluminum quick release, Rear: Shimano AceraX
Rims
Weinmann 519, 36-hole
Araya GP-710, 32-hole
Spokes
Stainless steel, 2.0mm straight gauge
Stainless steel, 2.0mm straight gauge
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
26 x 2.10" knobby
26 x 2.10" Tioga Edge
Rear Tire
—
26 x 2.10" Tioga Psycho TT
Wheel Size
26" wheels
26" wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
70°
70°
Seat-tube angle
73.5°
73.5°
Chainstay / rear center
420 mm
425 mm
Wheelbase
1059 mm
1060 mm
Fork offset / rake
—
40.6 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run. Legacy reference geometry is model-level historical data whose corresponding frame size is not identified; compare those dimensions as reference values rather than size-normalized fit data.