KONI Special Active shocks are the next generation of sport performance rear shock for the E46 323i/325i/328i/330i (without sport suspension). The Special Active shock uses KONI's patented FSD technology (Frequency Selective Damping) to variably adjust the shock stiffness based on suspension movement. It's self-adjusting for road conditions! The shock uses a stiff setting on smooth roads or very slow suspension movements (cornering for example) and that gives it more control and better handling. But it automatically switches to a softer setting for rapid suspension movements such as a rough road. This keeps the ride comfortable and not jarring or harsh like a shock with fixed valving.
Since all of the technology is mechanical and internal to the shock there are no sensors, cables, electronics, or setup to work on. FSD has been adopted by OE manufacturers like Alfa Romeo, Lamborghini, and Mercedes-Benz and has also won praise in the RV market where shock damping is notoriously challenging (extremely heavy vehicles that must have a plush ride). The FSD technology and KONI lifetime warranty make them similar to other performance shocks from Germany.
The red KONI Special Active shocks replace the previous gold-colored FSD shock sets. Special Active shocks are available in single shocks instead of only as full sets. They are a direct replacement for the stock E46 non-sport shocks and use all of the OEM mounts and bump stops. Special Active shocks can be used with either stock or Sport springs.
KONI Special Active/FSD Details:
- Excellent ride quality on all road surfaces
- Bright red finish
- Less expensive than electronic systems
- Lifetime Warranty
for E46 with standard suspension, not sport suspension. All coupe models had sport suspension. Not for Xi AWD models.
Sold per shock.
BMW Fitments: 3 Series
E46 (99-05) > 323i
E46 (99-05) > 325i
E46 (99-05) > 328i
E46 (99-05) > 330i