501 Excalibur

1991 Moto Morini 501 Excalibur Technical Analysis & Specification Breakdown

At the heart of the 1991 Moto Morini 501 Excalibur custom - cruiser motorcycle, Moto Morini relies on a 507 cc (30.9 cu in) air-cooled v2, four-stroke powerplant. In factory specification, peak output is rated at 41 HP (29.9 kW) at 8,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 80.9 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 501 Excalibur measures 193 kg (425 lbs) wet (curb), translating to a power-to-weight ratio of 0.21 HP/kg (4.71 kg per horsepower). The 17-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 149 km/h (93 mph).

Within MotoLibrary's Moto Morini archive, this model family spans 6 indexed model years from 1986 to 1991, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.