Eibach BMW 3 Series G20 & M3 G80 Anti-Roll Bar Kit (2019+)The Eibach anti roll bar kit for the BMW G80 M3 Saloon, G81 M3 Touring and G20 G21 3 Series reduces body roll when cornering and improves stability during fast direction changes. This is an essential upgrade for track driving. The suspension system anti roll bar helps control the lateral and centrifugal forces This reduces body roll while cornering or making fast directional changes The system uses the outside cornering spring rate along with the rate