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.
- Data limitation
No geometry is recorded for 2005 Diamondback Viper X.
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: 20×1.95.
Ratio2.75:1
Estimated speed at 90 RPMGear
Rear tire: 20×1.75.
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
2004 Diamondback Viper X
2005 Diamondback Viper X
Overview
Model Year
2004
2005
Brand
Diamondback
Diamondback
Model
Viper X
Viper X
Bicycle Type
BMX
BMX
Original MSRP
$165.00
Not documented
Colors
Flat Black, Super Nickel
—
Sizes
20"
—
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Chromoly
Chromoly seat tube
Fork
Diamondback
Diamondback
Fork Material
Hi-tensile steel, unicrown crown
Steel, unicrown crown
Drivetrain
Crankset
1-piece 175mm, 44 teeth
Chromoly one-piece, 44 teeth
Bottom Bracket
Loose ball
Loose ball
BB Shell Width
American
—
Rear Cogs
1-speed, 16 teeth
1-speed, 16 teeth
Chain
KMC Z410, 1/2 x 1/8"
KMC Z410
Pedals
Resin, platform
DB aluminum
Brakes
Brakes
Rush U-Brake, w/detangler rear brakes, aluminum rear levers
Rush u-brake rear brakes, Rush rear levers
Cockpit & Contact Points
Headset
1 1/8" threadless FSA
1 1/8" threadless FSA
Handlebar
DB Riser
Db
Handlebar Extensions
—
Not included
Stem
Aluminum
Aluminum
Saddle
Padded
DB padded
Seatpost
Steel, 25.4mm diameter
Steel
Wheels & Tires
Hubs
Aluminum
Aluminum
Rims
Alex C303, 36-hole
Alex C303, 36-hole
Spokes
—
14ga. straight gauge
Spoke Nipples
Brass nipples
—
Front Tire
20 x 2.125" DB Knobby
20 x 2.125" DB Knobby
Rear Tire
20 x 1.95" DB Knobby
20 x 1.75" DB Knobby
Wheel Size
20" wheels
20" wheels
Geometry · choose a size for each bicycle
Geometry size
—
Head-tube angle
74°
—
Seat-tube angle
71°
—
Chainstay / rear center
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.