Jade Wonder Imperial

2018 Black Douglas Jade Wonder Imperial Technical Analysis & Specification Breakdown

Engineered by Black Douglas for the classic motorcycle segment, the 2018 Black Douglas Jade Wonder Imperial features a 125 cc (7.6 cu in) air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 12.8 HP (9.3 kW) at 7,500 rpm while maximum torque reaches 15 Nm (11.1 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 102.4 HP per liter and a 2,000 rpm working window between peak torque (5,500 rpm) and peak power (7,500 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 Jade Wonder Imperial measures 95 kg (209 lbs) dry, translating to a power-to-weight ratio of 0.13 HP/kg (7.42 kg per horsepower). Rider ergonomics and chassis geometry center around a 830 mm (32.7 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,500 mm (59.1 in) wheelbase engineered for balanced agility and highway composure. The 9-liter (2.4 US gal) fuel tank paired with a rated consumption of 2.86 L/100 km provides an estimated theoretical range of roughly 315 km (196 miles) between fill-ups, while factory top speed is listed at 100 km/h (62 mph).