Velopedia Bicycle Archive
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Compare published geometry, gearing and specifications for up to three bicycles.
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At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Data limitation
No geometry is recorded for 2009 Diamondback Reactor Pro and 2008 Diamondback Reactor Pro.
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: 20×1.75.
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
2009 Diamondback Reactor Pro
2008 Diamondback Reactor Pro
Overview
Model Year
2009
2008
Brand
Diamondback
Diamondback
Model
Reactor Pro
Reactor Pro
Bicycle Type
BMX
BMX
Original MSRP
Not documented
$435.00
Colors
Red/White
Silver Metallic
Sizes
21" TT
21" top tube
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
7005 T6 Aluminum
7005 aluminum
Fork
—
Diamondback
Fork Material
Chromoly, unicrown crown
Chromoly, unicrown crown
Drivetrain
Component Group
BMX
BMX Mix
Crankset
FSA Assault, 44 teeth
175mm tubular chromoly 3-piece, 44 teeth
Bottom Bracket
FSA BB30
Euro sealed-bearing
Cassette
Cassette cog
—
Rear Cogs
1-speed, 16 teeth
1-speed, 16 teeth
Chain
KMC, 1/2 x 3/32"
KMC, 1/2 x 3/32"
Pedals
DB Sound Alloy w/replaceable pins
DB Sound Alloy w/replaceable pins
Brakes
Brakes
Tektro 920 linear rear brakes, Tektro Sabre rear levers
Tektro 920 linear brakes, Tekto Sabre levers
Cockpit & Contact Points
Headset
1 1/8" FSA Threadless
1 1/8" integrated FSA
Handlebar
Chromoly 2pc
Chromoly 2-piece
Handlebar Extensions
Not included
Not included
Stem
DB Reactor
DB Reactor
Saddle
DB Race
DB Race
Seatpost
Alloy Micro Adjust, 27.2mm diameter
Alloy micro-adjust, 27.2mm diameter
Wheels & Tires
Hubs
Sealed aluminum
Front: Sealed bearing alloy, Rear: Aluminum cassette
Rims
Front: Alienation Deviant, Rear: alienation 440, 36-hole
Sun Rhyno Lite, 36-hole
Spokes
14ga. (2.0mm)
14ga. (2.0mm) straight gauge
Front Tire
20 x 2.125" Kenda Small Block Eight
20 x 2.125" Kenda Small Block Eight
Rear Tire
20 x 1.75" Kenda Small Block Eight
20 x 1.75" Kenda Small Block Eight
Wheel Size
20" wheels
20" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.