Esterella RS

1998 Kawasaki Esterella RS Technical Analysis & Specification Breakdown

Engineered by Kawasaki for the classic motorcycle segment, the 1998 Kawasaki Esterella RS utilizes a 249 cc (15.2 cu in) air-cooled engine layout. In factory specification, peak output is rated at 17 HP (12.4 kW) at 7,500 rpm while maximum torque reaches 18 Nm (13.3 lb-ft) at 5,000 rpm, transferring power to the rear wheel through a 5-speed gearbox. With a specific output of 68.3 HP per liter and a 2,500 rpm working window between peak torque (5,000 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 Esterella RS measures 142 kg (313 lbs) dry, translating to a power-to-weight ratio of 0.12 HP/kg (8.35 kg per horsepower). Rider ergonomics and chassis geometry center around a 745 mm (29.3 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops.