130mm (5.25”) Speaker Adapter 3-Point to 4-Point

3D printed adapter to mount standard 130mm (5.25”) 4-bolt speakers on doors originally designed for 3-bolt factory speakers.
This adapter was designed specifically for a Renault Mégane Coupé 3 (2009), but it should also fit other cars that use the same 3-point mounting system.

In addition to changing the bolt pattern, the adapter also spaces the speaker 28mm out, matching the original installation depth.

Shown in the pictures with a JBL Stage3 527F speaker, but it should fit most 130mm (5.25”) models.

Features

• Converts 3-point factory mount to 4-point aftermarket speaker mount
• 28mm spacer thickness
• 130mm (5.25”) speaker diameter
• Tested with JBL Stage3 527F
• Perfect fit on Renault Mégane Coupé 3 (2009) front doors
• May also work on other vehicles using the same 3-bolt pattern