Cruisers

2009Viper Diablo

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The 2009 Viper Diablo is a heavyweight custom cruiser designed for experienced riders seeking classic styling with modern performance. Its 2491cc V-twin engine delivers substantial torque through a six-speed transmission, while the innovative dry sump oiling system and air cooling keep maintenance straightforward. Best known for its aggressive aesthetics and commanding presence, it suits riders who prioritize authentic cruiser character and commanding road presence.

Capacity: 2491.0 ccm
Engine: V-Twin, four-stroke
Gearbox: 6-speed
Dry weight: 272.2 kg
Seat height: 610 mm
Power: 160.0 HP (117.7 kW)

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What’s new for the 2009 Viper Diablo

vs the 2008

Spec	2008	2009
Rear suspension	Viper Chrome Billet Aluminum Swing Arm with Viper Oil Dampened Adjustable Air-Ride	Viper Oil Dampened Adjust-on-the-Fly Air-Ride Rear Suspension

Other years 2008 2009

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering25%

City riding35%

Daily riding45%

Touring45%

Two-up45%

Track10%

Best for: Built as a boulevard and show-cruiser statement bike, prioritizing style, torque, and presence over outright speed or agility.
Built for: A big-inch air-cooled V-twin custom with a wide rear tire, chopper-ish rake, and premium suspension components that signal a boutique, hand-built cruiser character.
Not ideal for: Not a fit for riders wanting sharp cornering, off-road capability, or a lightweight, nimble city commuter.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us

Your height

Inseam (optional)

Units

At 610mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2009 Viper Diablo, with a cramped knee angle of around 65 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 750 mm or under — Short Kings →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 2491.0 ccm
Power: 160.0 HP (117.7 kW)
EPA CO Emissions: 2.0 CO g/km
Engine type: V-Twin, four-stroke
Power/weight ratio: 0.5878 HP/kg (dry)
Cooling system: Air
Fuel system: Carburettor
Starting: Electric
Aspiration: Naturally aspirated
Valves per cylinder: 2
Lubrication system: Viper Dry Sump Oiling System Utilizing Proprietary Oil in the Frame Technology
Torque: Not on record - add it

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Belt
Clutch: Hydraulic High Performance Rivera

Dimensions & weight

Wheelbase: 1727 mm
Overall length: 2438 mm
Seat height: 610 mm
Dry weight: 272.2 kg
Oil capacity: 4.20 litres

Chassis & suspension

Front suspension: Marzocchi Inverted Adjustable Cartridge Forks
Rear suspension: Viper Oil Dampened Adjust-on-the-Fly Air-Ride Rear Suspension
Rake (fork angle): 34.0°

Brakes & wheels