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MotoLibrary Score
43/100Commuter
Power/Weight
0.25 hp/kg
Torque
46 Nm
Engine
647 ccm
Technical Overview
2020 Mash Dirt 650 Black Technical Analysis & Specification Breakdown
At the heart of the 2020 Mash Dirt 650 Black allround motorcycle, Mash pairs a 647 cc (39.5 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 40 HP (29.2 kW) at 6,000 rpm while maximum torque reaches 46 Nm (33.9 lb-ft) at 4,500 rpm. With a specific output of 61.8 HP per liter and a 1,500 rpm working window between peak torque (4,500 rpm) and peak power (6,000 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 Dirt 650 Black measures 163 kg (359 lbs) dry, translating to a power-to-weight ratio of 0.25 HP/kg (4.08 kg per horsepower). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance. The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
61.8 HP/L
Power-to-Weight
0.25 HP/kg (4.08 kg/HP)
Power Band Window
4,500–6,000 rpm
Standover Height
780 mm (30.7 in)
Engine
Displacement647.0 ccm (39.48 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power40.0 HP (29.2 kW)) @ 6000 RPM
Torque46.0 Nm (4.7 kgf-m or 33.9 ft.lbs) @ 4500 RPM
Compression8.8:1
Bore x Stroke100.0 x 82.0 mm (3.9 x 3.2 inches)
Fuel SystemInjection. Delphi
Fuel ControlOverhead Cams (OHC)
IgnitionElectronic ignition
LubricationDry sump
CoolingAir
Performance
Emission DetailsEuro 4
Chassis
Front SuspensionUpside Down
Front Travel41 mm (1.6 inches)
Wheels & Brakes
Front Tyre120/80-18
Rear Tyre130/80-18
Front BrakesSingle disc. ABS
Front Brake Ø320 mm (12.6 inches)
Rear BrakesSingle disc. ABS
Rear Brake Ø240 mm (9.4 inches)
Dimensions & Weight
Dry Weight163.0 kg (359.4 pounds)
Power/Weight0.2454 HP/kg
Seat Height780 mm (30.7 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.
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.
