DS4 Drag Star Four 400

2011 Yamaha DS4 Drag Star Four 400 Technical Analysis & Specification Breakdown

Built around Yamaha's custom - cruiser motorcycle platform, the 2011 Yamaha DS4 Drag Star Four 400 features a 399 cc (24.4 cu in) air-cooled v2, four-stroke configuration. In factory specification, peak output is rated at 32.2 HP (23.5 kW) at 7,500 rpm while maximum torque reaches 32 Nm (23.6 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and shaft drive (cardan) final drive. With a specific output of 80.7 HP per liter and a 1,500 rpm working window between peak torque (6,000 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 DS4 Drag Star Four 400 measures 225 kg (496 lbs) wet (curb), translating to a power-to-weight ratio of 0.14 HP/kg (6.99 kg per horsepower). Rider ergonomics and chassis geometry center around a 660 mm (26 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,610 mm (63.4 in) wheelbase engineered for planted straight-line stability. The 15-liter (4 US gal) fuel tank paired with a rated consumption of 2.33 L/100 km provides an estimated theoretical range of roughly 644 km (400 miles) between fill-ups.