The GSX-R125 has an aggressive look and a high-quality finish that reflects the heritage of the GSX-R line. Thanks to wind-tunnel development, the sleek bodywork also enhances the GSX-R125’s easy handling and aerodynamic performance. The GSX-R125 has the smallest projected frontal area in the 125cm3 class, which contributes to better acceleration, fuel economy, and cruising stability by reducing lift and drag. The GSX-R125’s smooth, strong fairing and bodywork pieces not only look great, they are also lighter than the bodywork used by competitors.

LED Lighting

Reflecting its GSX-R heritage, the GSX-R125 features vertically stacked LED headlights, with the low beam above the high beam, and position lights on each side of the headlight. The GSX-R125’s LED headlights are bright and compact, lighter and longer lasting compared to conventional halogen-bulb headlights seen on competing machines. Because LED headlights use about 15% of the electrical power required by conventional bulbs, less engine power is needed to run the motorcycle’s alternator, improving acceleration and fuel economy. The LED license plate light on the rear fender is light and compact and much more durable and vibration resistant than the conventional bulb lights installed on competing 125cm3 machines.

I am text block. Click edit button to change this text. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

There is a science to building high-performance engines, and the GSX-R125’s DOHC engine could be used in a university textbook as an example of how to make a lot of power out of a very efficient and compact powerplant. The objective is combustion efficiency, optimal balance of the sporty engine character and fuel economy. There is a connection between the GSX-R125 and the race-proven four-cylinder GSX-R600 sold around the world, because the GSX-R125’s single cylinder is almost one-quarter of a GSX-R600.  Although Suzuki engineers experimented with different bore and stroke figures to find the most efficient combination for the GSX-R125, the two engines both use an over-square design, with a larger bore and a shorter stroke, and have a similar bore x stroke ratio, 1.576:1 for the GSX-R600 and 1.505:1 for the GSX-R125. The GSX-R125 engine displaces an actual 125cm3 from a 62mm cylinder bore and a 41.2mm piston stroke. The larger bore makes room for two 24mm intake valves and two 21mm exhaust valves, set upright at narrow angles to improve the shape of the combustion chamber, increasing the compression ratio, performance and fuel economy. The cylinder bore is plated with Suzuki’s own race-proven nickel-phosphorus-silicon-carbide bore coating known as SCEM (Suzuki Composite Electrochemical Material). An aluminum cylinder plated with SCEM weighs much less than an aluminum cylinder fitted with a conventional, pressed-in cast-iron liner, while also reducing friction and improving durability, ring seal, heat transfer and the engine’s ability to maintain consistent high-power output.

An effective liquid-cooling system with a large radiator helps keep the engine at the optimum temperature, producing consistent performance and maximizing fuel efficiency and mileage. The engine makes its high horsepower and reaches its generous torque, delivering strong, effective power across a broad rpm range. And the GSX-R125 comes with a smooth-shifting 6-speed transmission and an electric starter.