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MotoLibrary Score
41/100Commuter
Power/Weight
0.2 hp/kg
Engine
445 ccm
Technical Overview
2021 Swm Six Days 500 Technical Analysis & Specification Breakdown
Positioned in Swm's classic motorcycle lineup, the 2021 Swm Six Days 500 features a 445.3 cc (27.2 cu in) oil & air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 29.5 HP (21.5 kW), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 66.2 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 Six Days 500 measures 153 kg (337 lbs) wet (curb), translating to a power-to-weight ratio of 0.19 HP/kg (5.19 kg per horsepower). Rider ergonomics and chassis geometry center around a 845 mm (33.3 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,470 mm (57.9 in) wheelbase engineered for balanced agility and highway composure. The 16.5-liter (4.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
66.2 HP/L
Power-to-Weight
0.19 HP/kg (5.19 kg/HP)
Standover Height
845 mm (33.3 in)
Engine
Displacement445.3 ccm (27.17 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power29.5 HP (21.5 kW))
Compression10.0:1
Bore x Stroke90.0 x 70.0 mm (3.5 x 2.8 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionElectronic
LubricationDry sump with oil pump rotor and cartridge filter
CoolingOil & air
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet, multiplate type; cable control
Performance
Emission DetailsEuro 5
Chassis
Frame TypeSteel single tube beam with double cradle
Front SuspensionHydraulic fork with rebound adjustment
Rear SuspensionDouble hydraulic shock absorber; with spring preload and rebound adjustment
Wheelbase1470 mm (57.9 inches)
Ground Clearance226 mm (8.9 inches)
Wheels & Brakes
Front Tyre100/90-19
Rear Tyre130/80-17
Front BrakesSingle disc. ABS
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc. ABS
Rear Brake Ø220 mm (8.7 inches)
WheelsWire spoked. Pirelli MT60 tires.
Dimensions & Weight
Dry Weight148.0 kg (326.3 pounds)
Weight incl.153.0 kg (337.3 pounds)
Power/Weight0.1993 HP/kg
Seat Height845 mm (33.3 inches) If adjustable, lowest setting.
Overall Height1390 mm (54.7 inches)
Overall Length2170 mm (85.4 inches)
Fuel Capacity16.50 litres (4.36 US gallons)
Oil Capacity2.80 litres (2.96 US quarts)
Other
StarterElectric
Color OptionsOlive Green/Gray.
Notes
SWM is short for Speedy Working Motors in Italy. Cooperates with Chinese Shineray.
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.
