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. Handling

    2004 Diamondback Reactor Pro has a 0.5° slacker head-tube angle than 1996 Diamondback Reactor Pro in the archived geometry. Frame size is not identified for 1996 Diamondback Reactor Pro and 2004 Diamondback Reactor Pro.

    Fork offset, tire size and wheelbase also affect steering; head angle alone is not a handling verdict.

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.

2004 Diamondback Reactor ProSize Legacy reference · 44T · 16T · 1-speed
Ratio2.75:1
Estimated speed at 90 RPMGear14.9 mph

Uses front tire 20×2.125; 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.

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
2004 Diamondback Reactor Pro
Overview
Model Year
1996
2004
Brand
Diamondback
Diamondback
Model
Reactor Pro
Reactor Pro
Bicycle Type
BMX
BMX
Original MSRP
$490.00
$440.00
Colors
—
Super Nickel
Sizes
Boys 12"
20"
Weight
23.4 lb
—
Frameset
Frame Construction
Welded aluminum
TIG-welded
Frame Material
7005 aluminum
7005 aluminum
Fork
Diamondback aero BMX
RMX Pro
Fork Material
4130 chromoly, unicrown crown
CRMO, single crown
Drivetrain
Crankset
1-piece chromoly 7", 43 teeth
RMX Pro, 3pc, 44 teeth
Bottom Bracket
Victor VPB-35
Precision sealed, splined
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 Z160, 1/2 x 3/32"
Pedals
Victor VP-457
DB Bigfoot, alloy platform
Brakes
Brakes
Dia-Compe VC-1 brakes, Diamondback alloy BMX levers
Tektro 920 rear brakes, Sabre rear levers
Cockpit & Contact Points
Headset
1 1/8" threadless Dia-Compe Kontak Aheadset ST-2
1 1/8" FSA
Handlebar
Diamondback BMX chromoly
RMX CrMo
Stem
Diamondback BMX alloy
RMX cnc, aluminum
Saddle
Diamondback BMX, chromoly rails
RMX padded
Seatpost
Kalloy SP-257, 27.0 mm diameter
Aluminum micro-adjust, 26.8mm diameter
Wheels & Tires
Hubs
—
Sealed mechanism
Rims
Weinmann 4019, 32-hole
Alex AL-DM2418, 36-hole
Spokes
Stainless steel, 2.0mm 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
—
Wheel Size
20" wheels
20" wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
75°
74.5°
Seat-tube angle
71°
71°
Chainstay / rear center
395 mm
393.7 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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