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.
- Gearing
1999 KHS T-Rex has a 18% lower climbing ratio than 1997 KHS T-Rex.
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.
Lowest1.00:1Highest3.43:1Total range343%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 24×2; rear size isn’t listed.
Lowest0.82:1Highest3.43:1Total range416%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 24×2; 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
1997 KHS T-Rex
1999 KHS T-Rex
Overview
Model Year
1997
1999
Brand
KHS
KHS
Model
T-Rex
T-Rex
Bicycle Type
Juvenile
Juvenile mountain bike, non-suspension
Original MSRP
$219.00
$219.00
Colors
Black, Wild Berry
Red, White
Sizes
Boys 12", girls 12"
Boys 12", girls 12"
Weight
28 lb
27.7 lb
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Chromoly/hi-tensile steel
Chromoly main triangle/hi-tensile steel rear stays
Fork
Khs
Akisu
Fork Material
Hi-tensile steel, unicrown crown
Hi-tensile steel, oversize, unicrown crown
Drivetrain
Component Group
Shimano Tourney TY-22
Shimano Tourney
Shifters
Grip Shift MRX-170
Shimano Revo
Front Derailleur
Shimano Tourney TY-22 top-swing, top-pull/clamp-on 31.8 mm
Shimano Tourney TY-22 top-swing, bottom-pull/clamp-on 28.6mm
Rear Derailleur
Shimano Tourney TY-22
Shimano Tourney
Crankset
Tracer MA-3i, 28/38/48 teeth
Tracer, 28/38/48 teeth
Bottom Bracket
Victor VPB-33
Victor VPB-33, 120mm spindle
BB Shell Width
68mm English
68mm English
Rear Cogs
6-speed, 14 - 28 teeth
6-speed, 14 - 34 teeth
Chain
Shimano CN-UG50, 1/2 x 3/32"
KMC Z-50, 1/2 x 3/32"
Pedals
Resin
Xerama SP-872N
Brakes
Brakes
Chang Star 865A brakes, Chang Star 262P levers
Chang Star linear-pull brakes, Vanguard VG-409P levers
Cockpit & Contact Points
Headset
1" steel
1" Victor VP-H732
Handlebar
Steel
Wei Han ATB-1 steel
Stem
Steel
Hsin Lung steel
Saddle
Velo VL-244
Velo VL-328
Seatpost
Steel, 25.6 mm diameter
Steel, 26.0mm diameter
Wheels & Tires
Hubs
Steel, nutted
Aluminum, nutted
Rims
Aluminum, 36-hole
HJC P-GN aluminum, 36-hole
Spokes
Shuhn Lih steel, 2.0mm straight gauge
Shuhn Lih steel, 2.0mm straight gauge
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
24 x 2.00" Duro HF-822
24 x 2.00" Duro HF-878
Wheel Size
24" wheels
24" wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
70°
70°
Seat-tube angle
70°
72°
Chainstay / rear center
424 mm
424 mm
Wheelbase
987 mm
991 mm
Fork offset / rake
50 mm
50 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.