At the heart of the 2012 Enfield Bullet B5 classic motorcycle, Enfield utilizes a 499 cc (30.5 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 27.5 HP (20.1 kW) at 5,250 rpm while maximum torque reaches 41.3 Nm (30.5 lb-ft) at 4,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 55.1 HP per liter and a 1,250 rpm working window between peak torque (4,000 rpm) and peak power (5,250 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Bullet B5 measures 186.9 kg (412 lbs) wet (curb), translating to a power-to-weight ratio of 0.15 HP/kg (6.8 kg per horsepower). Rider ergonomics and chassis geometry center around a 800 mm (31.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,372 mm (54 in) wheelbase engineered for quick, flickable steering geometry. The 14.5-liter (3.8 US gal) fuel tank paired with a rated consumption of 2.77 L/100 km provides an estimated theoretical range of roughly 523 km (325 miles) between fill-ups.
Specific Output
55.1 HP/L
Power-to-Weight
0.15 HP/kg (6.8 kg/HP)
Power Band Window
4,000–5,250 rpm
Theoretical Range
~523 km (325 mi)
Engine
Displacement499.0 ccm (30.45 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power27.5 HP (20.1 kW)) @ 5250 RPM
Torque41.3 Nm (4.2 kgf-m or 30.5 ft.lbs) @ 4000 RPM
Compression8.5:1
Bore x Stroke84.0 x 90.0 mm (3.3 x 3.5 inches)
Fuel SystemInjection
Fuel ControlOverhead Valves (OHV)
IgnitionDigital Electronic Ignition
LubricationDry sump
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, mulitiplate
Performance
Fuel Consumption2.77 litres/100 km (36.1 km/l or 84.92 mpg)
Greenhouse Gases64.3 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsEuro III
Chassis
Front SuspensionTelescopic fork
Front Travel130 mm (5.1 inches)
Rear SuspensionGas-filled shock absorbers
Rear Travel80 mm (3.1 inches)
Wheelbase1372 mm (54.0 inches)
Ground Clearance140 mm (5.5 inches)
Wheels & Brakes
Front Tyre3.25-19
Rear Tyre3.50-19
Front BrakesSingle disc
Front Brake Ø280 mm (11.0 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø152 mm (6.0 inches)
Dimensions & Weight
Weight incl.186.9 kg (412.0 pounds)
Seat Height800 mm (31.5 inches) If adjustable, lowest setting.
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.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
