H&R Anti-Roll Bar Kit – 33039-1 (Front & Rear) BMW M3 E9X BMW > M4 > G87 2023- this atmospheric diverter valve dumps

this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted

5mm (3/8")

Front Lower Wishbone Bush (Williams)

PFF19-2202 Front Arm Rear Bush

H&R Anti-Roll Bar Kit – 33039-1 (Front & Rear) BMW M3 E9X BMW > M4 > G87 2023- this atmospheric diverter valve dumpsH&R Anti Roll Bar Kit 330391 (Front & Rear) Upgrade your BMWs handling with the premium quality H&R Anti Roll Bar Kit 330391a complete front and rear sway bar setup engineered for enhanced cornering control and road confidence. Product Overview: Brand: H&R Part Number: 330391 Type: Front and Rear Anti Roll Bar (Sway Bar) Kit Construction: High tensile German spring steel, powder coated, with precision forged ends and composite rubber bearings