Stage One BMW Speaker Upgrade for F31 with Harman Kardon

Stage One BMW Speaker Upgrade for F31 with Harman KardonGET 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

sold separately)

Inflates a wide range of items

This pump can support 850whp (Rated for 800whp on 100% E85) and is drop in ready

The following diagram shows how it is installed so that the Re|Flex AND a bluetooth analyzer can be used simultaneously

Our Stage 2 bucketed fuel pump comes with a single Walbro 450 (F90000274) fuel pump

INCLUDES EVERYTHING YOU NEED FOR CRYSTAL CLEAR SOUND

PR Big Bore ("Stage 2")

Using the same precise form of sequential fuel injection

Even though our woofers are designed to be extremely efficient to maximize the output of your factory amplifier

B48-H (High Compression) models:

If they claim to be experienced but have no tangible evidence

Stage 1 E30 octane: up to 40% HP / 23% TQ