KLX250S

2018 Kawasaki KLX250S Technical Analysis & Specification Breakdown

At the heart of the 2018 Kawasaki KLX250S super motard motorcycle, Kawasaki pairs a 249 cc (15.2 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 21.5 HP (15.7 kW) at 7,500 rpm while maximum torque reaches 20.5 Nm (15.1 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 86.3 HP per liter and a 500 rpm working window between peak torque (7,000 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 KLX250S measures 138 kg (304 lbs) wet (curb), translating to a power-to-weight ratio of 0.16 HP/kg (6.42 kg per horsepower). Rider ergonomics and chassis geometry center around a 889 mm (35 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,430 mm (56.3 in) wheelbase engineered for balanced agility and highway composure. The 7.7-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Kawasaki archive, this model family spans 5 indexed model years from 2007 to 2020, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.