ACV Speaker rings Ø 165 mm BMW 3series door front / rear shelf 430879

IMPORTANT: A previous installation of 165 mm speakers is essential! An upgrade from 130 mm to 165 mm is not possible in this case! Please check installation depth! installation point: 1 = door front, 2 = rear shelf speaker: 165 mm panel cut out: 145 mm outer diameter: Ø 164 mm ring height: 6,90 mm.