Stage One BMW Speaker Upgrade for F44 Gran Coupe with Harman Kardon 7 SERIES including full factory ecu control

including full factory ecu control through our direct pin in wire harness

2017–present G30/G31 540i

and many other factors for specific horsepower expectations on your vehicle talk with your tuner

For more information please email us at sales@kiesmotorsports

Stage One BMW Speaker Upgrade for F44 Gran Coupe with Harman Kardon 7 SERIES including full factory ecu controlGET UNBELIEVABLE, CRYSTAL CLEAR SOUND. JUST BY REPLACING YOUR BMW'S SPEAKERS We took your factory BMW speakers and re engineered our upgrade for one thing: clarity. So you can simply swap your original speakers for ours without changing anything else in your audio system, and the result is smooth, natural, yet unbelievably detailed reproduction of your favorite music. PLAY YOUR MUSIC LOUDER. AND ENJOY EVERY NOTE: We engineered the Stage One speakers