KW Variant 1 Coilover Kit - 2014-2018 BMW 4 Series 428i/430i Coupe (w/o EDC) RWD YMM_2011_2016_Mercedes_Benz_SLK_Class_R172 The diffuser's aerodynamic shape helps

The diffuser's aerodynamic shape helps to subtly improve airflow at the rear of your vehicle

Installation requires replacing the factory dampers and springs

Key features include: Progressive spring rate for a smooth yet responsive ride

Eliminates "spongy" brake pedal feel

Helps eliminate electronic damper warning codes

KW Variant 1 Coilover Kit - 2014-2018 BMW 4 Series 428i/430i Coupe (w/o EDC) RWD YMM_2011_2016_Mercedes_Benz_SLK_Class_R172 The diffuser's aerodynamic shape helpsKW Variant 1 Coilover Kit Fitment: 2014 2018 BMW 4 Series 428i 430i Coupe (w o EDC) RWD Part #: 1022000D Overview The KW Variant 1 Coilover Kit is a high performance suspension upgrade designed specifically for the BMW 4 Series Coupe from 2014 to 2018. Crafted to enhance your vehicles handling dynamics and aesthetic appeal, this coilover kit offers a sporty driving experience combined with a sleek, modern look. Ideal for enthusiasts seeking improved