400 Geeny

2025 Jawa 400 Geeny Technical Analysis & Specification Breakdown

Positioned in Jawa's naked motorcycle lineup, the 2025 Jawa 400 Geeny relies on a 401 cc (24.5 cu in) liquid-cooled twin, four-stroke powerplant. In factory specification, peak output is rated at 42.2 HP (30.8 kW) at 9,500 rpm while maximum torque reaches 34 Nm (25.1 lb-ft) at 8,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 105.2 HP per liter and a 1,500 rpm working window between peak torque (8,000 rpm) and peak power (9,500 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the 400 Geeny measures 185 kg (408 lbs) dry, translating to a power-to-weight ratio of 0.23 HP/kg (4.38 kg per horsepower). Rider ergonomics and chassis geometry center around a 770 mm (30.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,395 mm (54.9 in) wheelbase engineered for quick, flickable steering geometry. The 16-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 138 km/h (86 mph).