YZF-R6

1999 Yamaha YZF-R6 Technical Analysis & Specification Breakdown

Engineered by Yamaha for the sport motorcycle segment, the 1999 Yamaha YZF-R6 relies on a 599 cc (36.6 cu in) liquid-cooled in-line four, four-stroke powerplant. In factory specification, peak output is rated at 120 HP (87.6 kW) at 13,000 rpm while maximum torque reaches 68 Nm (50.2 lb-ft) at 11,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 200.3 HP per liter and a 1,500 rpm working window between peak torque (11,500 rpm) and peak power (13,000 rpm), the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.

On the scales, the YZF-R6 measures 195 kg (430 lbs) wet (curb), translating to a power-to-weight ratio of 0.62 HP/kg (1.63 kg per horsepower). Rider ergonomics and chassis geometry center around a 820 mm (32.3 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,380 mm (54.3 in) wheelbase engineered for quick, flickable steering geometry. The 17-liter (4.5 US gal) fuel tank paired with a rated consumption of 6.9 L/100 km provides an estimated theoretical range of roughly 246 km (153 miles) between fill-ups, while factory top speed is listed at 250 km/h (155 mph).

Within MotoLibrary's Yamaha archive, this model family spans 23 indexed model years from 1999 to 2022, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.