Built around Big Bear Choppers's custom - cruiser motorcycle platform, the 2009 Big Bear Choppers Athena 100 EFI features a 1638.8 cc (100 cu in) v2, four-stroke configuration. In factory specification, peak output is rated at 95 HP (69.3 kW), transferring power to the rear wheel through a 6-speed gearbox. With a specific output of 58 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Athena 100 EFI measures 317.5 kg (700 lbs) dry, translating to a power-to-weight ratio of 0.3 HP/kg (3.34 kg per horsepower). Rider ergonomics and chassis geometry center around a 508 mm (20 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 2,235 mm (88 in) wheelbase engineered for planted straight-line stability. The 16.08-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
58 HP/L
Power-to-Weight
0.3 HP/kg (3.34 kg/HP)
Standover Height
508 mm (20 in)
Engine
Displacement1638.8 ccm (100.00 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power95.0 HP (69.3 kW))
Bore x Stroke101.6 x 101.6 mm (4.0 x 4.0 inches)
Fuel SystemInjection. S and S Electronic Fuel Injection (EFI)
LubricationS and S High volume oil pump
Transmission
Gearbox6-speed
Chassis
Frame TypeBBC Athena Softail
Rake40.0°
Trail95 mm (3.8 inches)
Front SuspensionBBC Smooth Mount Hidden Axle
Rear SuspensionProgressive
Rear Travel76 mm (3.0 inches)
Wheelbase2235 mm (88.0 inches)
Wheels & Brakes
Front Tyre90/80-21
Rear Tyre300/80-18
Front BrakesSingle disc. PM. 4-piston calipers
Rear BrakesSingle disc. BBC-PM 4-piston caliper BrakeDrive system
Dimensions & Weight
Dry Weight317.5 kg (700.0 pounds)
Power/Weight0.2992 HP/kg
Seat Height508 mm (20.0 inches) If adjustable, lowest setting.
Overall Length2921 mm (115.0 inches)
Fuel Capacity16.08 litres (4.25 US gallons)
Oil Capacity4.70 litres (4.97 US quarts)
Other
StarterElectric
Color OptionsGross Black, satin black, charcoal metallic, silver, black cherry, candy red, firecracker red, orange, electric blue.
Notes
Model also called BBC Athena Chopper 100 SMOOTH™ EFI Evolution. Various forged aluminium wheel and paint scheme options.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
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.
