ER-5 Twister

2001 Kawasaki ER-5 Twister Technical Analysis & Specification Breakdown

At the heart of the 2001 Kawasaki ER-5 Twister naked motorcycle, Kawasaki pairs a 499 cc (30.5 cu in) twin, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 50 HP (36.5 kW) at 9,000 rpm while maximum torque reaches 45 Nm (33.2 lb-ft) at 7,200 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 100.2 HP per liter and a 1,800 rpm working window between peak torque (7,200 rpm) and peak power (9,000 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 ER-5 Twister measures 180 kg (397 lbs) dry, translating to a power-to-weight ratio of 0.28 HP/kg (3.6 kg per horsepower). Rider ergonomics and chassis geometry center around a 815 mm (32.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,430 mm (56.3 in) wheelbase engineered for balanced agility and highway composure. The 17-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 180 km/h (112 mph).

Within MotoLibrary's Kawasaki archive, this model family spans 2 indexed model years from 2000 to 2001, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.