RKS 125

2011 Keeway RKS 125 Technical Analysis & Specification Breakdown

Built around Keeway's sport motorcycle platform, the 2011 Keeway RKS 125 features a 124.5 cc (7.6 cu in) single cylinder, four-stroke configuration. In factory specification, peak output is rated at 11 HP (8 kW) at 9,000 rpm while maximum torque reaches 9.2 Nm (6.8 lb-ft) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 88.4 HP per liter and a 1,500 rpm working window between peak torque (7,500 rpm) and peak power (9,000 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 RKS 125 measures 117 kg (258 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (10.64 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,270 mm (50 in) wheelbase engineered for quick, flickable steering geometry. The 16-liter (4.2 US gal) fuel tank paired with a rated consumption of 2 L/100 km provides an estimated theoretical range of roughly 800 km (497 miles) between fill-ups, while factory top speed is listed at 100 km/h (62 mph).

Within MotoLibrary's Keeway archive, this model family spans 7 indexed model years from 2011 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.