Front+Rear Speaker Replacement For 2004-2005 INFINITI QX56

This kit replaces the front and rear speakers in a 2004-2005 INFINITI QX56 with one pair of MB Quart FKB116 6.5" speakers up front and one pair of MB Quart FKB169 6x9" speakers in the rear, matching each factory cutout to the size it was built for instead of forcing one universal size into both locations. The FKB116 handles 240W peak power (120W RMS) per pair across 40 Hz to 22 kHz, and the FKB169 handles 300W peak power (150W RMS) per pair across 46 Hz to 20 kHz. Both speakers share the same construction: an aluminum dome tweeter over a thermal-formed polypropylene cone, a butyl rubber surround that holds its shape through hot summers and cold winters, and a pure copper voice coil wound on a Kapton former for fast heat dissipation. Heavy-gauge stamped steel frames keep both speakers rigid over rough roads, and spade connectors or direct soldering work on either one at install. Because front and rear come from the same speaker line, tone and output stay matched end to end on the INFINITI QX56 instead of the front stage sounding brighter or duller than the rear fill.