In 2010, Suzuki launched the RM-Z250, a motocross motorcycle that followed the RM-Z450 and featured for the first time a fuel injection system that resulted in better startability, faster throttle response, faster acceleration, and better power characteristics at all rpm ranges.
The model featured three types of fuel map modes, Leaner, Normal, and Richer, that were selectable by replacing the provided fuel couplers, which allowed the bike performance to be adjusted for a wide range of courses.
The aluminum frame and swingarm were optimized for better balance and enhanced handling and track feel, while the suspension and brakes were also upgraded, which qualified the bike as a championship-winning machine.
The 249cc four-stroke single-cylinder liquid-cooled engine featured titanium valves, an aluminum alloy cylinder, Suzuki Composite Electrochemical Material (SCEM) cylinder coating, and Suzuki Advanced Sump System (SASS). The power output of 45 hp at 11,500 rpm and 29 Nm (21 lb-ft) of torque with a peak at 9,000 rpm was transferred to the rear wheel through a five-speed manual transmission.
The 2010 Suzuki RM-Z250 came with features such as carefully designed footpeg brackets that prevented mud clogging, a textured seat for a comfortable position, Renthal tapered aluminum handlebars, and a handlebar pad that reduced the vibrations.
The new livery of the bike was completed with eye-catching red, black, and white graphics.