SLR 650

1999 Honda SLR 650 Technical Analysis & Specification Breakdown

Built around Honda's enduro - offroad motorcycle platform, the 1999 Honda SLR 650 pairs a 644 cc (39.3 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 34 HP (24.8 kW) at 5,700 rpm while maximum torque reaches 51 Nm (37.6 lb-ft) at 4,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 52.8 HP per liter and a 1,700 rpm working window between peak torque (4,000 rpm) and peak power (5,700 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the SLR 650 measures 180 kg (397 lbs) wet (curb), translating to a power-to-weight ratio of 0.19 HP/kg (5.29 kg per horsepower). Rider ergonomics and chassis geometry center around a 845 mm (33.3 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,440 mm (56.7 in) wheelbase engineered for balanced agility and highway composure. The 16-liter (4.2 US gal) fuel tank paired with a rated consumption of 5.9 L/100 km provides an estimated theoretical range of roughly 271 km (168 miles) between fill-ups, while factory top speed is listed at 144 km/h (89 mph).

Within MotoLibrary's Honda archive, this model family spans 3 indexed model years from 1997 to 1999, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.