Impulse 400

2011 Suzuki Impulse 400 Technical Analysis & Specification Breakdown

Positioned in Suzuki's allround motorcycle lineup, the 2011 Suzuki Impulse 400 relies on a 398 cc (24.3 cu in) liquid-cooled in-line four, four-stroke powerplant. In factory specification, peak output is rated at 52.3 HP (38.2 kW) at 11,000 rpm while maximum torque reaches 37 Nm (27.3 lb-ft) at 9,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 131.4 HP per liter and a 1,500 rpm working window between peak torque (9,500 rpm) and peak power (11,000 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 Impulse 400 measures 177 kg (390 lbs) dry, translating to a power-to-weight ratio of 0.3 HP/kg (3.38 kg per horsepower). Rider ergonomics and chassis geometry center around a 760 mm (29.9 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,435 mm (56.5 in) wheelbase engineered for balanced agility and highway composure. The 16-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Suzuki archive, this model family spans 2 indexed model years from 2008 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.