Rockford Fosgate YXZ-STAGE4 Yamaha YXZ Stage 4 Audio Kit

The Rockford Fosgate YXZ-STAGE4 is a vehicle-specific Stage 4 audio package for select Yamaha YXZ side-by-side models. It combines a compact digital media receiver, four 6.5-inch marine speakers, a 10-inch subwoofer, a 400-watt four-channel amplifier, and model-specific mounting and wiring hardware. The system is intended to provide a complete audio upgrade without relying on universal speaker pods or improvised wiring.

This kit is designed for Yamaha YXZ owners who want music playback, radio reception, and added low-frequency output for trail and recreational use. The included PMX-2 receiver supports Bluetooth audio streaming, rear USB and auxiliary inputs, AM/FM/WB tuning, and wired remote compatibility. Its compact 2.7-inch color TFT display and backlit controls are suited to powersports installation environments.

Sound is delivered through two front 6.5-inch full-range speakers in lower enclosures and two rear 6.5-inch speakers in enclosed roll-bar-mounted housings. A loaded front 10-inch dual 2-ohm marine subwoofer enclosure adds bass support while the TM400X4ad amplifier supplies rated full-range power. The amplifier uses Class-AD circuitry and adjustable high-pass and low-pass filtering for system setup.

The YXZ-STAGE4 uses Rockford Fosgate Element Ready components intended for exposure to dust, water, UV, vibration, and changing outdoor conditions. The package is listed with an IPX6 water-resistance rating, and the amplifier uses a conformal-coated circuit board. These design choices make the kit appropriate for off-road Yamaha YXZ applications where conventional car-audio hardware may not be suitable.

Rather than requiring a separate collection of source, amplifier, speaker, enclosure, and harness parts, this Stage 4 package brings those core pieces together in one platform. Direct-connect wiring harnesses and dedicated YXZ installation parts help support a vehicle-specific fit. It is a full-system option for owners seeking both front and rear speaker coverage with a dedicated subwoofer enclosure.

Key Features

• Complete Stage 4 Package: Includes receiver, amplifier, four speakers, subwoofer, enclosures, and installation hardware.
• 400-Watt TM400X4ad Amplifier: Four-channel Class-AD amplification supports the included audio system.
• Four 6.5-Inch Speakers: Front lower and rear enclosed speakers provide broader cabin coverage.
• 10-Inch Marine Subwoofer: Loaded front enclosure adds dedicated low-frequency reproduction.
• PMX-2 Digital Media Receiver: Provides Bluetooth, USB, auxiliary, AM, FM, and weather-band playback.
• Element Ready Construction: Components are designed for demanding outdoor powersports exposure.

Design & Installation

The kit combines black Prime Marine speakers, a black 10-inch RM110D2B marine subwoofer, molded vehicle-specific enclosures, and a compact marine-grade amplifier. The front speaker and subwoofer enclosures are designed to integrate into the Yamaha YXZ without taking away passenger space. Rear speaker enclosures use included PM-CL2B die-cast clamps for roll-bar mounting.

Installation uses the included RFYXZ-PMXDK dash kit, RFYXZ-K8 two-seat amplifier wire kit, RFYXZ-RSW16 rear-speaker harness, and direct-connect YXZ wiring harnesses. Rockford Fosgate lists an estimated installation time of four hours. An antenna is not included, so one is needed for AM/FM/WB radio reception.