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.
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.
Ratio2.75:1
Estimated speed at 90 RPMGear
Rear tire: 20×1.75.
Ratio2.75:1
Estimated speed at 90 RPMGear
Rear tire: 20×1.95.
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
2001 Diamondback Viper X
2004 Diamondback Viper X
Overview
Model Year
2001
2004
Brand
Diamondback
Diamondback
Model
Viper X
Viper X
Bicycle Type
BMX
BMX
Original MSRP
$199.99
$165.00
Colors
Back N' Black, Bonfire Orange, Chrome-Plated
Flat Black, Super Nickel
Sizes
Pro
20"
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Chromoly main triangle/hi-tensile steel rear stays
Chromoly
Fork
Diamondback
Diamondback
Fork Material
Steel, unicrown crown
Hi-tensile steel, unicrown crown
Drivetrain
Crankset
1-piece 175mm, 44 teeth
1-piece 175mm, 44 teeth
Bottom Bracket
Steel retainer style
Loose ball
BB Shell Width
—
American
Rear Cogs
1-speed, 16 teeth
1-speed, 16 teeth
Chain
KMC Z410, 1/2 x 3/32"
KMC Z410, 1/2 x 1/8"
Pedals
Aluminum platform
Resin, platform
Brakes
Brakes
Tektro 923A rear brakes, Tektro 287A rear levers
Rush U-Brake, w/detangler rear brakes, aluminum rear levers
Cockpit & Contact Points
Headset
1 1/8" threadless Tange Seiki TG-3
1 1/8" threadless FSA
Handlebar
Chromoly BMX
DB Riser
Handlebar Extensions
Not included
—
Stem
Aluminum
Aluminum
Saddle
Padded BMX
Padded
Seatpost
Aluminum micro-adjust, 26.0mm diameter
Steel, 25.4mm diameter
Wheels & Tires
Hubs
Aluminum
Aluminum
Rims
Alex X-303, 36-hole
Alex C303, 36-hole
Spoke Nipples
—
Brass nipples
Front Tire
20 x 2.125" Tioga Comp III
20 x 2.125" DB Knobby
Rear Tire
20 x 1.75" Tioga Comp III
20 x 1.95" DB Knobby
Wheel Size
20" wheels
20" wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
74°
74°
Seat-tube angle
71°
71°
Chainstay / rear center
387.3 mm
387.3 mm
Wheelbase
—
957.6 mm
Fork offset / rake
—
30.5 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.