T140 ES Bonneville Royal Limited Edition (Eureopean)

1981 Triumph T140 ES Bonneville Royal Limited Edition (Eureopean) Technical Analysis & Specification Breakdown

Positioned in Triumph's classic motorcycle lineup, the 1981 Triumph T140 ES Bonneville Royal Limited Edition (Eureopean) pairs a 750 cc (45.8 cu in) air-cooled twin, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 45 HP (32.8 kW), transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 60 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the T140 ES Bonneville Royal Limited Edition (Eureopean) measures 199.6 kg (440 lbs) wet (curb), translating to a power-to-weight ratio of 0.23 HP/kg (4.44 kg per horsepower). Rider ergonomics and chassis geometry center around a 787 mm (31 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,422 mm (56 in) wheelbase engineered for balanced agility and highway composure. The 15.14-liter (4 US gal) fuel tank paired with a rated consumption of 4.7 L/100 km provides an estimated theoretical range of roughly 322 km (200 miles) between fill-ups, while factory top speed is listed at 180 km/h (112 mph).