At the heart of the 2021 Metisse Hammer Mk3 classic motorcycle, Metisse features a 649 cc (39.6 cu in) twin, four-stroke configuration. In factory specification, peak output is rated at 47 HP (34.3 kW) at 6,700 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 72.4 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Hammer Mk3 measures 135 kg (298 lbs) dry, translating to a power-to-weight ratio of 0.35 HP/kg (2.87 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,450 mm (57.1 in) wheelbase engineered for balanced agility and highway composure. The 8-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Metisse archive, this model family spans 2 indexed model years from 2016 to 2021, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
72.4 HP/L
Power-to-Weight
0.35 HP/kg (2.87 kg/HP)
Engine
Displacement649.0 ccm (39.60 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTriumph TR6 engine
Power47.0 HP (34.3 kW)) @ 6700 RPM
Compression9.0:1
Bore x Stroke71.0 x 82.0 mm (2.8 x 3.2 inches)
Fuel SystemCarburettor. Amal type R930/23
Transmission
Gearbox4-speed
Final DriveChain (final drive)
Performance
ExhaustTwin up-swept chrome pipes with bandaged heat shields
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.
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.
