We produced our first master cylinder way back in 1972 and have steadily been working with improving the performance of our products. Today we have a wide range of various master cylinders, with everything from the very small rear master cylinder up to the latest addition � a radial racing master cylinder, with leverage adjustment.

Our master cylinders can also be used for operating hydraulic clutches. If you have a wire operated clutch we have matching levers for such clutches.

ISR have developed a much sought after range of handlebar clamp electronic switch assemblies. Now you can build a real clean looking handlebar with these integrated switches.