The KONI FSD (Frequency Selective Damping) shock combines excellent road holding and handing characteristics with no-compromise comfort levels. It's a two-in-one solution from KONI that doesn't require the installation of sophisticated electronics, cables or sensors. Firmness for sporty driving on even road surfaces. Smoothness for a comfortable ride on uneven road surfaces. It's possible via KONI's patented Frequency Selective Damping technology - technology that actively controls the damping level on the basis of the vehicle's body and suspension movement frequency. FSD shocks are a smart suspension system that adjusts automatically and in a fraction of a second to road conditions and driving style. How It Works (Refer to second image above): In standard shock absorbers the main damping characteristic is defined by the oil flow going through the piston assembly (1). Combining it with the FSD feature (2), KONI added a special valve that controls an oil flow parallel to the one going through the piston rod (3). This parallel oil flow is closed by the FSD feature, giving a rise in damping force almost linear to the time that the piston is moving in one direction. Put simply: the FSD feature is a hydraulic amplifier that delays the build up of pressure. In some ways an extra tuning option has been created in order to get the best possible combination of handling and comfort. Since it is an integrated part of the hydraulic valve system inside the damper, no additional cables, sensors or any other electronic devices are needed to operate an FSD damper. These Koni FSD's Fit: 1999-2005 Volkswagen Jetta 1.8T, VR6, 2.0L, TDi 1999-2006 Volkswagen Golf/GTI 1.8T, VR6, 2.0L, TDi

 

Applications: Volkswagen Beetle 1998 - 2006 Volkswagen Golf/GTI IV 1999 - 2006 Volkswagen Jetta IV 1999 - 2005

 

On Mar 30, 2008, JUSTIN M. said: Rating: What more can I say about these shocks? SIMPLY AMAZING! These shocks do everything and more than Koni claims. These are the best choice for stock or modified cars. The ride is very smooth even with lowering springs installed. These shocks provide a better ride than the OEM shocks that were smooth to being with. If you can afford these shocks and are after the smoothest, responsive, better than OEM these are the shocks for you. I installed these on a 2000 Jetta TDI, installation was smooth as silk just like OEM. Ordering from NAM was outstanding as usual. Installed on: 2000 Volkswagen Jetta IV Own this item? Write your own review!

 

This product manufactured in: Holland