Koni Special Active Shock Absorber - 8745-1356
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eBayKoni Special Active Front Shock Absorber (FSD) For BMW 1 Series - (8745-1356)
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Koni Special Active Front Shock Absorber (FSD) Fits BMW 1 Series, (8745-1356)Free delivery in 1–3 days£226.68Visit shop →
Product Information
Full details
The Koni Special Active Shock Absorbers (8745-1356) are designed for daily drivers and automotive enthusiasts seeking a balance between sharp handling and ride comfort without the complexity of electronic suspension systems. By utilizing Frequency Selective Damping (FSD) technology, these dampers automatically adjust their firmness based on road input, effectively managing body roll during spirited maneuvers while soaking up harsh impacts from potholes or rough pavement. The primary caveat is that this is a passive mechanical system, meaning it does not allow for manual cockpit-adjustable damping settings or ride height modification.
All features
| Model Part Number | 8745-1356 |
|---|---|
| Brand | KONI |
Extended Product Information
FAQs
Does this shock absorber require electronic integration?
No, the Koni Special Active system is entirely mechanical and relies on an internal hydraulic valve system to adjust damping.
Can I use these with lowering springs?
While they are designed for standard height, they can often be used with mild lowering springs; however, it is best to check compatibility with the spring manufacturer.
How long do these dampers usually last?
Durability depends on road conditions and driving style, but they are built for longevity and are often a lifetime-style replacement for daily drivers.
Do I need an alignment after installing these?
Yes, whenever suspension components are removed or replaced, a professional wheel alignment is recommended to ensure proper handling and tire wear.
Are these adjustable?
The internal FSD technology is self-adjusting based on road input; there are no external buttons or dials for manual adjustment.
Troubleshooting
Noticeable oil leak around the shock shaft
This indicates a damaged internal seal; the unit must be replaced as it cannot be serviced or rebuilt.
Persistent clunking noise after installation
Check all mounting bolts and top-nut tightness; ensure all bushings are seated correctly and that no components are contacting the spring coils.
Vehicle feels floaty or lacks dampening
Inspect for mechanical damage to the shock body or external mounting points; verify the unit is the correct part number for the specific vehicle weight and application.
Pros and Cons
Pros
- Automatic, real-time adaptation to varying road surfaces
- Improves vehicle stability without requiring electronic sensors
- Enhances ride comfort by filtering out high-frequency road harshness
- Durable construction designed for long-term daily driver reliability
- Direct fitment designed for specific vehicle chassis compatibility
Cons
- No ability to manually adjust damping levels for track use
- Does not provide height adjustment functionality
- Higher initial cost compared to standard replacement shock absorbers
- Requires professional installation to ensure proper seating
Setup, Compatibility & Care
Installation of the Koni Special Active dampers should be performed by a qualified mechanic, as it involves the removal and reinstallation of suspension components, including the spring assembly. Always verify that part number 8745-1356 is compatible with your specific vehicle make, model, and production year before purchasing. During installation, ensure all mounting hardware is torqued to the manufacturer's vehicle-specific specifications. Regarding care, the dampers are largely maintenance-free; however, it is recommended to periodically inspect the shock shafts for oil leaks and ensure the protective surface coating remains intact. Avoid using high-pressure power washers directly on the shock seals, as this can force road grit into the internal mechanisms.