TX 311 M

1986 Aprilia TX 311 M Technical Analysis & Specification Breakdown

Engineered by Aprilia for the trial motorcycle segment, the 1986 Aprilia TX 311 M utilizes a 277 cc (16.9 cu in) liquid-cooled single cylinder, two-stroke layout. In factory specification, peak output is rated at 17 HP (12.4 kW) at 6,400 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 61.4 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 TX 311 M measures 85 kg (187 lbs) wet (curb), translating to a power-to-weight ratio of 0.2 HP/kg (5 kg per horsepower). The 6.5-liter (1.7 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 125 km/h (78 mph).

Within MotoLibrary's Aprilia archive, this model family spans 3 indexed model years from 1986 to 1988, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.