Unveiled at a motor show in 1958, the Colleda Sel Twin SB features the world’s first 2-stroke 2-cylinder engine in the 125 cm³ class. The adoption of a twin cylinder engine enables higher rpms and compression, resulting in dramatic advances in performance. Paired with a rotary 4-speed transmission, this engine generates maximum horsepower of 10 PS and an impressive top speed of 110 km/h. Unusually for the time, it is also equipped with an electric starter. Another notable feature is the Jet Line styling that flows from the headlight to the fuel tank and tool box. This model is fitted with a telescopic front suspension, which resembles a bottom link suspension from the outside. The Colleda Sel Twin SB is also the forerunner of the subsequent Suzuki Sport models.

The Colleda Sel Twin SB-2 features fundamentally the same engine as the Colleda RT racing machine that took part in the Isle of Man TT Races in 1960. This 2-stroke 2-cylinder engine is the first in its class to be equipped with a twin-carburetor system. Various modifications were also applied to the cylinders, combustion timing, scavenging passages, oil lubrication system, and crankcase scavenging pressure. As a result, maximum horsepower was increased from 10 to 11.5 PS. Fuel economy also improved from 60 to 65 km/L (40 km/h steady state fuel economy on paved roads*). The weight of the chassis was reduced by 5 kg, helping to realize 125 cm³ class-leading performance, such as a 0-to-400 m acceleration time of 21 seconds and a top speed of 115 km/h. This model is also equipped with the first starter lever-operated carburetor system to be adopted on a motorcycle.
* Suzuki’s internal test results. Figures may vary depending on the rider’s skill or riding conditions.

The distinguishing feature of the Colleda 125SK is its styling that expresses both functionality and speed. The 125 cm³ 2-stroke air-cooled 2-cylinder engine can be started using either an electric or a kick starter, and generates maximum horsepower of 11.5 PS with a top speed of 115 km/h. Upright pipe handlebars help the rider to maintain an ideal riding position. Combined with oil dampers that deliver comfortable cushioning performance, this model is perfectly suited for either work or leisure activities. Modified scrambler style models also performed well in clubman races throughout the country.

After winning the manufacturers’ titles in both the 125 and 50 cc classes of the 1963 Road Racing World Championship Grand Prix season, Suzuki’s 2-stroke technology gained an impressive reputation throughout the world. The company used this reputation to strongly promote its motorcycles under the slogan, “The world’s number one 2-stroke motorcycle manufacturer.” The Colleda 125S30 is equipped with a similar 2-stroke 2-cylinder engine. This engine features an easy-to-maintain single carburetor and generates ample performance, including excellent steady-state fuel economy of 65 km/L*, maximum horsepower of 12 PS, and a top speed of 110 km/h. The engine is paired with a rotary 4-speed transmission.
* Suzuki’s internal test results. Figures may vary depending on the rider’s skill or riding conditions.