Pay in 4 interest-free payments of $112.38 Learn more
Ships within 48 hours · Estimated delivery Sep 17 - Sep 22
 If you do not need or want an ethanol sensor at this time
Black glass fiber reinforced cones offer improved strength over conventional polypropylene or paper cones
then you will not be able to have your DME unlocked for tuning
2017–present G30/G31 540i
Stage One BMW Speaker Upgrade for G29 Z4 with Harman Kardon (No Install Video) G31 Â If you do notGET 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
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