Function: Car audio speaker spacer ring aid in audio speaker installation, play an important part in reducing resonance and making the speakers stronger. Replace new car speaker spacers adapter, provide better sound quality, fixed speakers to reduce door resonance. The ring mounting bracket is good partner for mounting new speaker. You can install the speakers you want by adding extra depth. Specification: Material: ABS Fit for Speaker Dia: 6.5" Depth: 7mm / 0.28" Inner Diameter: 78mm / 3.07" External Diameter 1: 116mm / 4.57" External Diameter 2: 104mm / 4.09" Appropriate for: The speaker ring fits most 6.5 inch speakers. for BMW 230i 17-21 Front Doors for BMW 230i xDrive 17-21 Front Doors for BMW M240i 17-21 Front Doors for BMW M240i xDrive 17-21 Front Doors for BMW 325xi 2006 Front Doors for BMW 325i 2006 Front Doors for BMW 328i 07-13 Front Doors for BMW 328i xDrive 09-16 Front Doors for BMW 328i GT xDrive 14-16 Front Doors for BMW 328xi 07-08 Front Doors for BMW 330xi 2006 Front Doors for BMW 330i 2006 Front Doors for BMW 330i GT xDrive 17-19 Front Doors for BMW 330i xDrive 2019 Front Doors for BMW 335d 09-11 Front Doors for BMW 335i 07-13 Front Doors for BMW 335i xDrive 09-13 Front Doors for BMW 335i GT xDrive 14-16 Front Doors for BMW 335xi 07-08 Front Doors for BMW 340i GT xDrive 17-19 Front Doors for BMW 428i 14-16 Front Doors for BMW 428i xDrive 14-16 Front Doors for BMW 428i Gran Coupe 15-16 Front Doors for BMW 428i xDriveGan Coupe 15-16 Front Doors Item List:2 Pcs Subwoofer Speaker Spacer
