Stage One BMW Speaker Upgrade G20/G80 3 Series with Harman Kardon F87 After years of requests

After years of requests

Best of all this pump ships completely assembled and ready to install we don’t even have a core charge

HOW DO WE DELIVER BASS THAT'S LOUDER

Less heat soak than aftermarket cast manifolds means proven lower IAT's

Stage One BMW Speaker Upgrade G20/G80 3 Series with Harman Kardon F87 After years of requestsGET 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