Rockford Fosgate RFFMXI Inline MAXI Fuse Holder

The Rockford Fosgate RFFMXI is an inline MAXI fuse holder designed for vehicle audio power wiring. It provides a dedicated location for a MAXI fuse in a 4 AWG or 8 AWG power cable run. When paired with an appropriately selected fuse, it helps support protected power distribution for amplifiers and other 12-volt audio accessories.

This holder is intended for installers building or updating a car audio electrical system using larger-gauge cable. Its inline format makes it suitable for placing a fuse holder directly within a power-wire run. The RFFMXI accepts either 4 AWG or 8 AWG wire, providing flexibility when matching it to the cable used in an installation.

The RFFMXI uses custom-tooled solid brass construction with HPP plating for corrosion resistance. Its platinum finish gives the holder a coordinated appearance with other Rockford Fosgate power-connection accessories. The holder is made to accept standard MAXI fuses and supports fuse protection up to 100 amps.

A screw-off case design and hex-head connection bolts provide access for wiring and fuse service. The enclosed, water-tight case design helps keep the fuse connection contained within the holder. This makes the RFFMXI a practical choice for clean power-wire routing in automotive audio installations.

Use the RFFMXI as part of an amplifier power-wire upgrade, battery connection refresh, or custom audio installation. Select a MAXI fuse rating that is appropriate for the connected equipment and cable system, without exceeding the holder's 100-amp maximum. The holder is supplied for a single inline fuse position rather than as a distribution block.

Key Features

• MAXI Fuse Format: Accepts standard MAXI-style automotive fuses.
• 100A Maximum Rating: Supports fuse protection up to 100 amps.
• 4 AWG or 8 AWG Compatibility: Fits either supported power-wire size.
• Solid Brass Construction: Uses custom-tooled brass connection hardware.
• HPP Plating: Helps provide corrosion-resistant terminal surfaces.
• Inline Water-Tight Case: Contains one fuse within an enclosed holder.

Design & Installation

The RFFMXI combines a platinum-finish case with custom-tooled solid brass connections and HPP plating. Its screw-off ends allow access to the internal fuse area, while hex-head bolts secure the cable connections. The case also carries a pressed Rockford Fosgate logo.

Install this holder inline on a 4 AWG or 8 AWG power cable using one MAXI fuse. Confirm cable size, fuse type, and fuse rating before installation, and do not exceed the 100-amp maximum rating. It is suited to single-circuit amplifier power wiring where a compact inline fuse holder is needed.