KONI Special Active FSD Shock (Rear) for 2003-2010 BMW X3 (E38) AMG GT 43 Whiteline Caster Kits on your

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KONI Special Active FSD Shock (Rear) for 2003-2010 BMW X3 (E38) AMG GT 43 Whiteline Caster Kits on yourKONI Special Active shocks for the 2003 2010 BMW X3 (E38) 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.