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.
- Handling
2001 Diamondback Reactor has a 1.0° slacker head-tube angle than 2000 Diamondback Reactor in the archived geometry. Frame size is not identified for 2001 Diamondback Reactor and 2000 Diamondback Reactor.
Fork offset, tire size and wheelbase also affect steering; head angle alone is not a handling verdict.
- Data limitation
Only 2001 Diamondback Reactor has enough published drivetrain data for gearing calculations.
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.
Gearing unavailable for this size.
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 Reactor
2000 Diamondback Reactor
Overview
Model Year
2001
2000
Brand
Diamondback
Diamondback
Model
Reactor
Reactor
Bicycle Type
BMX
BMX
Original MSRP
$429.99
$479.99
Colors
Black Eye Blue
Ball-Burnished, Blue
Sizes
Pro
Pro
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
7005 aluminum
6061 T6 aluminum
Fork
Diamondback RMX
Diamondback
Fork Material
Chromoly, unicrown crown
Chromoly, unicrown crown
Drivetrain
Crankset
3-piece chromoly 180mm, 44 teeth
3-piece chromoly, 44 teeth
Bottom Bracket
Sealed
Diamondback spindle
Rear Cogs
1-speed, 16 teeth
1-speed
Chain
KMC HP-20, 1/2 x 3/32"
—
Pedals
Aluminum platform
Platform, aluminum
Brakes
Brakes
Tektro 920A rear brakes, Tektro 311A rear levers
Aluminum linear-pull rear brakes, aluminum linear-pull rear levers
Cockpit & Contact Points
Headset
1 1/8" threadless Tange Seiki TG-3
1 1/8" threadless
Handlebar
Chromoly BMX
Diamondback CRMO
Handlebar Extensions
Not included
Not included
Stem
Aluminum
Alloy Ahead type
Saddle
RMX padded
Diamondback padded
Seatpost
Aluminum micro-adjust, 27.0mm diameter
Aluminum micro-adjust, 27.0mm diameter
Wheels & Tires
Hubs
RMX aluminum sealed bearing
Diamondback Slasher alloy
Rims
Alex X-303, 36-hole
Mavic XY, 36-hole
Spokes
—
Stainless steel, 2.0mm
Front Tire
20 x 2.125" Tioga Comp III
20 x 2.125" Tioga Comp III
Rear Tire
20 x 1.75" Tioga Comp III
20 x 1.95" Tioga Comp III
Wheel Size
20" wheels
20" wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
74°
75°
Seat-tube angle
71°
71°
Chainstay / rear center
381 mm
393.7 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.