Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. Data limitation

    No geometry is recorded for 2005 Diamondback Reactor Pro.

Gearing comparison

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

1996 Diamondback Reactor ProSize Legacy reference · 43T · 16T · 1-speed
Ratio2.69:1
Estimated speed at 90 RPMGear14.0 mph

Rear tire: 20×1.75.

2005 Diamondback Reactor Pro44T · 16T · 1-speed
Ratio2.75:1
Estimated speed at 90 RPMGear14.4 mph

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.

Try other gearing

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.
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Specification
1996 Diamondback Reactor Pro
2005 Diamondback Reactor Pro
Overview
Model Year
1996
2005
Brand
Diamondback
Diamondback
Model
Reactor Pro
Reactor Pro
Bicycle Type
BMX
BMX
Original MSRP
$490.00
Not documented
Colors
—
—
Sizes
Boys 12"
—
Weight
23.4 lb
—
Frameset
Frame Construction
Welded aluminum
TIG-welded
Frame Material
7005 aluminum
7075 aluminum
Fork
Diamondback aero BMX
Reactor Pro
Fork Material
4130 chromoly, unicrown crown
Chromoly, unicrown crown
Drivetrain
Crankset
1-piece chromoly 7", 43 teeth
TruVativ Racing Team, 44 teeth
Bottom Bracket
Victor VPB-35
TruVativ ISIS
BB Shell Width
68mm Threadless
—
Rear Cogs
1-speed, 16 teeth
1-speed, 16 teeth
Chain
KMC HP-70, 1/2 x 3/32"
KMC HP20
Pedals
Victor VP-457
DB Bigfoot III
Brakes
Brakes
Dia-Compe VC-1 brakes, Diamondback alloy BMX levers
Tektro 920 rear brakes, Tektro Sabre rear levers
Cockpit & Contact Points
Headset
1 1/8" threadless Dia-Compe Kontak Aheadset ST-2
1 1/8" threadless FSA
Handlebar
Diamondback BMX chromoly
DB Pro Chromoly
Handlebar Extensions
—
Not included
Stem
Diamondback BMX alloy
Aluminum
Saddle
Diamondback BMX, chromoly rails
DB padded
Seatpost
Kalloy SP-257, 27.0 mm diameter
TruVativ XR single-bolt, 26.8mm diameter
Wheels & Tires
Hubs
—
Aluminum
Rims
Weinmann 4019, 32-hole
Alex DM-24, 36-hole
Spokes
Stainless steel, 2.0mm straight gauge
14ga. straight gauge
Spoke Nipples
Brass nipples
—
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 1.75" Tioga Comp III
Wheel Size
20" wheels
20" wheels
Geometry · choose a size for each bicycle
Geometry size
—
Head-tube angle
75°
—
Seat-tube angle
71°
—
Chainstay / rear center
395 mm
—
Fork offset / rake
30 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.

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