Stage One BMW Speaker Upgrade for F10 Sedan with Standard Hi-Fi N63 Stage 2Â (2

Stage 2 (2

Boost Gauge

  Featuring our air hose style quick connect

Boost Control Solenoids

That means they play not just the lowest frequencies

Stage One BMW Speaker Upgrade for F10 Sedan with Standard Hi-Fi N63 Stage 2Â (2GET 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 to