FSD stands for "Frequency Selective Dampening" and it is a new shock design from Koni. It features 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. The FSD is a great shock to use for optimum comfort yet still retain a solid and sporty handling character.
FSD is the simplest and most economic way to significantly improve the ride and driving characteristics of every car.
Please note: Koni FSD is ONLY for use with stock ride-height vehciles.