We have FSDs and FSD/Eibach kits in stock for your E82 128 and 135. Check out pricing below!
Koni FSD Shock Absorber Kit - $763.99 with free shipping anywhere in the lower 48 states
- In stock and ready to ship
NAMOTORSPORTS STG1 Sport Suspension Kit w/Eibach Pro-Kit Springs and Koni FSD Dampers - $899.98 with free shipping anywhere in the lower 48 states
- In stock and ready to ship
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 Springs Lower:
Front 1.2 inches / Rear 1.2 inches
E82 BMW 128 Coupe
E82 BMW 135 Coupe
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