Built around Mash's enduro - offroad motorcycle platform, the 2017 Mash Custom 400 pairs a 398 cc (24.3 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 27 HP (19.7 kW) at 7,000 rpm while maximum torque reaches 30 Nm (22.1 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 67.8 HP per liter and a 1,500 rpm working window between peak torque (5,500 rpm) and peak power (7,000 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 Custom 400 measures 151 kg (333 lbs) wet (curb), translating to a power-to-weight ratio of 0.18 HP/kg (5.59 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
67.8 HP/L
Power-to-Weight
0.18 HP/kg (5.59 kg/HP)
Power Band Window
5,500–7,000 rpm
Standover Height
780 mm (30.7 in)
Engine
Displacement398.0 ccm (24.29 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power27.0 HP (19.7 kW)) @ 7000 RPM
Torque30.0 Nm (3.1 kgf-m or 22.1 ft.lbs) @ 5500 RPM
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
LubricationDry sump
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic Forks
Front Travel210 mm (8.3 inches)
Rear SuspensionTwin Shocks with Adjustable Pre-Load
Rear Travel200 mm (7.9 inches)
Wheels & Brakes
Front Tyre100/90-19
Rear Tyre130/70-18
Front BrakesSingle disc
Front Brake Ø280 mm (11.0 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø180 mm (7.1 inches)
WheelsWire spoked
Dimensions & Weight
Weight incl.151.0 kg (332.9 pounds)
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.
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.
