Koni FSD (Frequency Selective Damping) is the first no-compromise shock absorber in the world. A revolutionary new technique which combines the benefits of firm and comfortable suspension in a single perfect shock absorber. Firm for sporty driving on even road surfaces. Comfortable for a smooth ride on uneven road surfaces. Realizing the seemingly impossible! Banishing the disadvantages of the past, Koni FSD shock absorbers are a smart suspension system adjusting automatically to road conditions as well as driving style. And all of this in a fraction of a second. FSD guarantees greater stability, greater control and thus greater driving pleasure.

NOT to be used with ANY lowering springs.