Cygnus X SR

2012 Yamaha Cygnus X SR Technical Analysis & Specification Breakdown

Built around Yamaha's scooter motorcycle platform, the 2012 Yamaha Cygnus X SR relies on a 125 cc (7.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 11 HP (8 kW) at 8,500 rpm while maximum torque reaches 9.1 Nm (6.7 lb-ft) at 7,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 88 HP per liter and a 1,000 rpm working window between peak torque (7,500 rpm) and peak power (8,500 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 Cygnus X SR measures 122 kg (269 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (11.09 kg per horsepower). Rider ergonomics and chassis geometry center around a 785 mm (30.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,295 mm (51 in) wheelbase engineered for quick, flickable steering geometry. The 7.1-liter (1.9 US gal) fuel tank paired with a rated consumption of 2.5 L/100 km provides an estimated theoretical range of roughly 284 km (176 miles) between fill-ups, while factory top speed is listed at 110 km/h (68 mph).

Within MotoLibrary's Yamaha archive, this model family spans 4 indexed model years from 2011 to 2015, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.