KONI FSD Series Shock Absorbers have an extra valve that controls oil flow parallel to the piston assembly, giving the vehicle a smooth ride. They are able to make a significantly greater amount of force than conventional shocks at low frequencies. At high frequencies, they generate dramatically lower forces for a smoother ride over rough roads.

Koni is a world-renowned developer and manufacturer of high-performance hydraulic shock absorbers and suspension systems. Koni prides itself as a pioneer in providing people mobility. Since its inception in 1857, Koni has been providing leading, durable and experience-improving technology. From streetcars to trains to industrial applications, such as bridges, Koni has been at the forefront of providing top-notch dampers. In 1857, Koni was in the business of manufacturing leather equipment for horses. Just before the Second World War, the company started developing friction-type shock absorbers. After the Second World War, Koni started production of a newly improved telescopic shock absorber. In the 1950s, Koni started to play a more prominent role in motorsports, eventually participating in its first Grand Prix with Ferrari in 1958. Over the years, Koni has not only contributed to the development and advancement in damping technology for rally cars and racing cars but also in various commercial vehicles and other industrial projects including bridges. In 1972, Koni became a part of ITT, a global diversified industrial company that provides highly engineered, customized solutions for the energy, transportation, and industrial markets.