Product Details
Koni Special Active shocks for the 2014-2020 BMW 4 Series (F33) use Koni's patented Frequency Selective Damping (FSD) technology to deliver two damping curves in one fixed shock — soft for low-frequency road inputs (comfort) and firm for high-frequency body motion (control). The result is a daily driver that feels composed without compromising ride quality.
FSD reacts to the road, not to a driver setting, so there's nothing to adjust and nothing to wear out. Special Active works with stock springs or factory-spec lowering springs up to ~35 mm of drop, and is built on Koni's long-life twin-tube platform with the lifetime warranty on workmanship.
Features
- Patented Frequency Selective Damping — soft on bumps, firm in corners
- Zero adjustment required — FSD reacts to the road frequency automatically
- Compatible with stock or mild lowering springs (up to ~35 mm)
- Long-life twin-tube hydraulic design
- Made in the Netherlands by Koni
- Backed by Koni's lifetime workmanship warranty
Specifications
| Part Number | 8245 1385 |
| Part Name | Koni Special Active FSD Shock (Rear) |
| Year | 2014-2020 |
| Make | BMW |
| Model | 4 Series |
| Chassis Code | F33 |
| Position | Rear |
| Damping Adjustment | No |
| Hardware Set Included | 71 50 03 506 0 |
Vehicle Fitment
- 2014 BMW 4 Series (F33)
- 2015 BMW 4 Series (F33)
- 2016 BMW 4 Series (F33)
- 2017 BMW 4 Series (F33)
- 2018 BMW 4 Series (F33)
- 2019 BMW 4 Series (F33)
- 2020 BMW 4 Series (F33)

