Rockford Fosgate RFW4B100 Foot Spool 4 AWG Frosted Black Wire

Best for

• Car audio installers and DIYers who need a bulk 4 AWG negative/ground cable for amplifier and system wiring.

Key points

• Length: 100 ft spool
• Gauge: 4 AWG (American Wire Gauge specification)
• Conductor: multi‑strand copper
• Insulation: negative insulated
• Outer jacket: frosted black for enhanced flexibility
• Technologies/References: CTA-2015, BC-5W2

Fit and use

Sold as a continuous 100 ft spool for cutting to length as needed. Intended for use as a negative/ground conductor in car audio systems where 4 AWG cable is appropriate. Check that terminals and hardware accept 4 AWG cable.

What to know

This product is supplied as a bulk spool—no pre‑terminated ends are included. Confirm gauge and terminal compatibility with your system before purchase. Store spool flat and away from excessive heat or sharp edges to preserve the jacket and conductor.