650 OHC

2025 Jawa 650 OHC Technical Analysis & Specification Breakdown

Positioned in Jawa's classic motorcycle lineup, the 2025 Jawa 650 OHC features a 644 cc (39.3 cu in) oil & air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 39.4 HP (28.8 kW) at 6,000 rpm while maximum torque reaches 50 Nm (36.9 lb-ft) at 4,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 61.2 HP per liter and a 1,500 rpm working window between peak torque (4,500 rpm) and peak power (6,000 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 650 OHC measures 171 kg (377 lbs) dry, translating to a power-to-weight ratio of 0.23 HP/kg (4.34 kg per horsepower). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,420 mm (55.9 in) wheelbase engineered for balanced agility and highway composure. The 12.5-liter (3.3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 150 km/h (93 mph).

Within MotoLibrary's Jawa archive, this model family spans 2 indexed model years from 2024 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.