Pro-One Hyper 4 Pro-Quad Chopper - 2008 Specifications and Reviews

The 2008 Pro-One Hyper 4 Pro-Quad Chopper is a custom cruiser built for riders seeking aggressive styling and raw character. Powered by a 1983cc V-twin producing 100 horsepower and 121 pound-feet of torque, it delivers substantial low-end power through a 6-speed belt-drive transmission. Best known for its distinctive chopper aesthetic and heavyweight presence, this machine appeals to enthusiasts prioritizing bold customization and commanding road presence.

2008
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General information

CategoryCustom / cruiser
Year2008
ModelPro-One Hyper 4 Pro-Quad Chopper
 
 

Engine and Transmission Specifications

Transmission typefinal driveBelt
Gearbox6-speed
StarterElectric
IgnitionCrank-triggered electronic ignition
Fuel systemCarburettor. 45mm Mikuni
Compression8.2:1
Torque121.20
Power100.00
Stroke4
Engine typeV2
Capacity:1982.96 ccm (121.00 cubic inches)

Physical measures and capacities

Wheelbase2,083 mm (82.0 inches)
Ground clearance121 mm (4.8 inches)
Overall length2,743 mm (108.0 inches)
Seat height635 mm (25.0 inches) If adjustable, lowest setting.
Dry weight310.3 kg (684.0 pounds)

Pro-One Hyper 4 Pro-Quad Chopper dimensions and frame

Exhaust systemChrome exhaust with heat shields
Rear brakes diameter292 mm (11.5 inches)
Rear brakesSingle disc
Front brakes diameter292 mm (11.5 inches)
Front brakesSingle disc
Rear suspensionDual adjustable shock
Front suspensionHard-chrome fork tubes
Rake (fork angle)40.0°

Speed and acceleration

Power/weight ratio0.3223 HP/kg
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsRed
Fuel capacity15.14 litres (4.00 gallons)

Performance Profile & Rider Fit

100 hp
Peak Power
5.5s
0-60 mph

Best For

Track5%
City20%
Cornering15%
Daily Riding35%
Touring35%
Passenger30%

Rider Profile

Best ForThis is a machine best suited to experienced riders who are comfortable with a long, heavy, low-slung custom chopper that demands deliberate, confident inputs.
PurposeBuilt as a bold style-and-presence cruiser for boulevard cruising and show-stopping looks rather than performance riding.
Rider FitThe very low 635mm seat height eases inseam reach, but the 310kg weight and stretched 82-inch wheelbase mean slow-speed maneuvers and parking lot U-turns require real upper-body strength and confidence.
CharacterA raw, torque-driven V-twin custom chopper with an aggressive 40-degree rake, chrome styling, and a big-inch engine that rewards riders who want to be seen and felt on the road rather than ridden hard.
Not Ideal ForThis is not the bike for riders seeking agile cornering, off-road capability, or a nimble daily commuter.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2008 Pro-One Hyper 4 Pro-Quad Chopper Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 635mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2008 Pro-One Hyper 4 Pro-Quad Chopper, with a cramped knee angle of around 75 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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