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← Boss Hoss
Custom - Cruiser · 2008

BHC-3 ZZ4

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MotoLibrary Score
86 /100 High Performance
Power/Weight
0.95 hp/kg
Torque
549 Nm
Engine
5700 ccm

2008 Boss Hoss BHC-3 ZZ4 Technical Analysis & Specification Breakdown

At the heart of the 2008 Boss Hoss BHC-3 ZZ4 custom - cruiser motorcycle, Boss Hoss relies on a 5700 cc (347.8 cu in) liquid-cooled v8, four-stroke powerplant. In factory specification, peak output is rated at 476.1 HP (347.5 kW) at 5,250 rpm while maximum torque reaches 549.2 Nm (405.1 lb-ft) at 3,500 rpm, transferring power to the rear wheel through a automatic gearbox and chain final drive. With a specific output of 83.5 HP per liter and a 1,750 rpm working window between peak torque (3,500 rpm) and peak power (5,250 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the BHC-3 ZZ4 measures 503.5 kg (1110 lbs) dry, translating to a power-to-weight ratio of 0.95 HP/kg (1.06 kg per horsepower). Rider ergonomics and chassis geometry center around a 711 mm (28 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 2,032 mm (80 in) wheelbase engineered for planted straight-line stability.

Within MotoLibrary's Boss Hoss archive, this model family spans 7 indexed model years from 2005 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Specific Output
83.5 HP/L
Power-to-Weight
0.95 HP/kg (1.06 kg/HP)
Power Band Window
3,500–5,250 rpm
Standover Height
711 mm (28 in)
Engine
Displacement 5700.0 ccm (347.81 cubic inches)
Engine Type V8, four-stroke
Engine Details V8, four-stroke
Power 476.1 HP (347.5 kW)) @ 5250 RPM
Torque 549.2 Nm (56.0 kgf-m or 405.1 ft.lbs) @ 3500 RPM
Compression 10.0:1
Fuel System Injection. Holly 680 cfm Throttle Body
Cooling Liquid
Transmission
Gearbox Automatic
Final Drive Chain (final drive)
Performance
Exhaust 2.5 inch with dual mufflers
Chassis
Frame Type 28.0
Rake 33.0°
Front Suspension Inverted forks
Rear Suspension Dual 13.0 inch coilover shocks
Wheelbase 2032 mm (80.0 inches)
Ground Clearance 114 mm (4.5 inches)
Wheels & Brakes
Front Tyre 130/90-16
Rear Tyre 230/60-15
Front Brakes Double disc
Front Brake Ø 320 mm (12.6 inches)
Rear Brakes Single disc
Rear Brake Ø 320 mm (12.6 inches)
Dimensions & Weight
Dry Weight 503.5 kg (1,110.0 pounds)
Power/Weight 0.9455 HP/kg
Seat Height 711 mm (28.0 inches) If adjustable, lowest setting.
Other
Starter Electric
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Buying Checklist

Before You Compare This Bike

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Power
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Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
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Weight
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Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

Who Is This Bike For?

🔴
Advanced
High performance — experienced riders only.
✌️
Best For
Cruising & Touring
📏
Seat Height
71.1 cm / 28 in
⚖️
Handling
Heavy bike — requires confident handling
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