The Sport S31 features a 125 cm³ air-cooled 2-cylinder engine equipped with a twin carburetor system ideal for a sporty model. This high-performance engine realizes a top speed of 115 km/h and maximum horsepower of 12.5 PS with excellent steady state fuel economy of 60 km/L*. It also features both an electric and a kick starter. The rotary 4-speed automatic transmission has a rational gear ratio designed to achieve satisfying performance in a wide variety of riding conditions. The front suspension adopts the same telescopic oleo forks as racing models for high maneuverability and to enhance stability over rough roads. This model was released to commemorate Mitsuo Ito becoming the first Japanese rider to take first place at the Isle of Man TT Races in 1963 and Suzuki’s succession of wins in world championship GP races.

Dimensions and weight	Dimensions	Overall length	1,930 mm
		Overall width	675 mm
		Overall height	932 mm
	Wheelbase		1,260 mm
	Weight		120 kg
Engine	Engine type		2-stroke, 2-cylinder, air-cooled
	Engine displacement		124 cm³
	Bore x stroke		42.0 mm × 45.0 mm
	Maximum power		9.2kW(12.5PS) / 8,000rpm
	Maximum torque		11.8N-m / 6,000rpm
Transmission			4-speed constant mesh
Front tire size			3.00-16-4PR
Rear tire size			3.00-16-4PR