Pay in 4 interest-free payments of $112.38 Learn more
Ships within 48 hours · Estimated delivery Oct 8 - Oct 13
Horsepower Supported Pump Gas: 575
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VEHICLE MANUFACTURER WARRANTY AND EMISSIONS DISCLAIMER:
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Stage 1 E30 octane: up to 28% HP / 27% TQ
Stage One BMW Speaker Upgrade for G29 Z4 with Harman Kardon (No Install Video) Below $100 Horsepower Supported Pump Gas: 575GET 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
