Positioned in Sym's scooter motorcycle lineup, the 2020 Sym Maxsym 400i ABS features a 399 cc (24.4 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 35 HP (25.5 kW) at 7,000 rpm while maximum torque reaches 36.2 Nm (26.7 lb-ft) at 6,750 rpm, transferring power to the rear wheel through a automatic gearbox. With a specific output of 87.7 HP per liter and a 250 rpm working window between peak torque (6,750 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 Maxsym 400i ABS measures 234 kg (516 lbs) dry, translating to a power-to-weight ratio of 0.15 HP/kg (6.69 kg per horsepower). Rider ergonomics and chassis geometry center around a 755 mm (29.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,555 mm (61.2 in) wheelbase engineered for planted straight-line stability. The 14.2-liter (3.8 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 145 km/h (90 mph).
Within MotoLibrary's Sym archive, this model family spans 2 indexed model years from 2012 to 2020, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
87.7 HP/L
Power-to-Weight
0.15 HP/kg (6.69 kg/HP)
Power Band Window
6,750–7,000 rpm
Standover Height
755 mm (29.7 in)
Engine
Displacement399.0 ccm (24.35 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsElectroplated ceramic cylinder
Power35.0 HP (25.5 kW)) @ 7000 RPM
Torque36.2 Nm (3.7 kgf-m or 26.7 ft.lbs) @ 6750 RPM
Valves/Cylinder4
Fuel SystemInjection. EFI
CoolingLiquid
Transmission
GearboxAutomatic
Performance
Top Speed145.0 km/h (90.1 mph)
Emission DetailsEuro 4
Chassis
Front SuspensionTelescopic Fork, 41mm
Rear SuspensionUnit Swing with 5-way preload
Wheelbase1555 mm (61.2 inches)
Wheels & Brakes
Front Tyre120/70-15
Rear Tyre160/60-14
Front BrakesDouble disc. Optional ABS
Front Brake Ø275 mm (10.8 inches)
Rear BrakesSingle disc
Rear Brake Ø275 mm (10.8 inches)
Dimensions & Weight
Dry Weight234.0 kg (515.9 pounds)
Power/Weight0.1496 HP/kg
Seat Height755 mm (29.7 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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
