130mm (5.25”) Speaker Adapter 3-Point to and 34 similar items

130mm (5.25") Speaker Adapter - 3-Point to 4-Point Conversion Item Description Professional-grade speaker mounting adapter designed to convert 3-point speaker mounting systems to 4-point configuration for 130mm (5.25 inch) speakers. This adapter enables installation of standard 4-bolt pattern speakers into vehicles, equipment, or enclosures originally designed for 3-point mounting systems. Size: 130mm (5.25 inches) diameter Configuration: 3-Point to 4-Point conversion Material: Durable plastic construction Function: Bridges mounting pattern incompatibility Installation: Direct bolt-on fitment Compatibility Fitment Universal Application for 130mm Speakers: Heavy equipment cab audio systems Agricultural machinery (tractors, combines, excavators) Construction equipment (bulldozers, loaders, backhoes) Commercial vehicle installations Marine and industrial applications Custom speaker enclosure projects Compatible Speaker Brands: JBL 5.25" speakers Pioneer 130mm models Kenwood 5.25" series Alpine coaxial speakers Sony 130mm speakers Polk Audio 5.25" models Boss Audio systems Generic aftermarket speakers Note: Verify your existing mounting configuration before ordering. This adapter converts FROM 3-point TO 4-point pattern only. Condition Notes Condition: Used - Good Working Order Previously installed but fully functional Shows normal signs of use including minor scuff marks All mounting points intact and undamaged No cracks or structural damage Threads in good condition Ready for immediate installation Please Note: Mounting hardware/screws are NOT included. You will need appropriate fasteners for your specific application.