River 500

2006 Cagiva River 500 Technical Analysis & Specification Breakdown

Built around Cagiva's naked motorcycle platform, the 2006 Cagiva River 500 features a 497 cc (30.3 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 33.5 HP (24.5 kW) at 6,400 rpm while maximum torque reaches 41 Nm (30.2 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a 5-speed gearbox. With a specific output of 67.4 HP per liter and a 900 rpm working window between peak torque (5,500 rpm) and peak power (6,400 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 River 500 measures 160 kg (353 lbs) dry, translating to a power-to-weight ratio of 0.21 HP/kg (4.78 kg per horsepower). Rider ergonomics and chassis geometry center around a 810 mm (31.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,390 mm (54.7 in) wheelbase engineered for quick, flickable steering geometry. The 18-liter (4.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Cagiva archive, this model family spans 2 indexed model years from 2000 to 2006, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.