4pcs BMS 4544 Aft Diaphragm - Fits Many Models - Free Shipping!!! Replacement Diaphragm For BMS 4544, 8 ohms or 16 ohm VC 44.4mm

4pcs

Outside Diameter: 2.75" (69.85mm)
Voice Coil Diameter:  44.4mm
Nominal Impedance:  8 ohms or 16 ohms
DCR: 4.5 ohms
Dome Material: Titanium
Voice Coil: Aluminum Wire

Here is a list of the driver part #'s:
4538 and more.