Stage One BMW Speaker Upgrade for F36 with Harman Kardon X4 All kits are fully assembled

All kits are fully assembled and ready to drop-in

Note: To reach the advertised ability of these fuel pumps use of the Precision Raceworks in tank filter regulator assembly is required

Included in the box

(Aftermarket 2 piece charge pipe required)

So don't waste money on more expensive tools or settle for lesser quality designs pick up a Precision Raceworks lock ring tool today

Stage One BMW Speaker Upgrade for F36 with Harman Kardon X4 All kits are fully assembledGET 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