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MotoLibrary Score
38/100Commuter
Power/Weight
0.12 hp/kg
Torque
34 Nm
Engine
443 ccm
Technical Overview
2021 Kymco MXU 450i LE Prime Technical Analysis & Specification Breakdown
Positioned in Kymco's atv motorcycle lineup, the 2021 Kymco MXU 450i LE Prime relies on a 443 cc (27 cu in) liquid-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 31.5 HP (23 kW) at 7,500 rpm while maximum torque reaches 33.8 Nm (24.9 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a automatic gearbox and shaft drive (cardan) final drive. With a specific output of 71.1 HP per liter and a 2,000 rpm working window between peak torque (5,500 rpm) and peak power (7,500 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 MXU 450i LE Prime measures 268 kg (591 lbs) dry, translating to a power-to-weight ratio of 0.12 HP/kg (8.51 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,224 mm (48.2 in) wheelbase engineered for quick, flickable steering geometry. The 14.99-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
71.1 HP/L
Power-to-Weight
0.12 HP/kg (8.51 kg/HP)
Power Band Window
5,500–7,500 rpm
Engine
Displacement443.0 ccm (27.03 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power31.5 HP (23.0 kW)) @ 7500 RPM
Torque33.8 Nm (3.4 kgf-m or 24.9 ft.lbs) @ 5500 RPM
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.
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.
