Stage One BMW Speaker Upgrade for F31 with Harman Kardon G22 For more information please email

For more information please email us at sales@bootmod3

flashing and datalogging in offline mode without internet connectivity is also available

and additional capabilites

Impressive 160 PSI output

Stage One BMW Speaker Upgrade for F31 with Harman Kardon G22 For more information please emailGET 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