"Rattling heads since 2010"



Original price was: $1,319.95.Current price is: $1,199.95.



The PROXP-20RC-THUNDER-W add-on subwoofer kit allows you to add an aftermarket subwoofer to your 2020+ Polaris RZR Pro XP model vehicle with direct factory integration to an existing 2-speaker OEM system. The kit features our PROXP-20-SW 10″ loaded, high output subwoofer enclosure coupled with the MUD600-1 monoblock amplifier, amplifier mounting rack and all wiring needed for installation.

MTX RZR Pro XP kits are compatible with the following RZR models:
RZR Models 2020 2021 2022
RZR Pro XP / XP4 Sport Yes Yes
RZR Pro XP / XP4 Premium Yes Yes Yes
RZR Pro XP / XP4 Ultimate Yes Yes Yes
RZR Pro XP / XP4 Sport RFLE Yes
RZR Pro XP / XP4 Ultimate RFLE Yes
RZR Pro R / R 4 Sport Yes
RZR Pro R / R 4 Premium Yes
RZR Pro R / R 4 Ultimate Yes
RZR Turbo R / R 4 Sport Yes
RZR Turbo R / R 4 Premium Yes
RZR Turbo R / R 4 Ultimate Yes
Fitment Guide Note: The amp racks are not compatible with Polaris heater option.

PROXP-20-SW Key Features

  • 10″ Custom Fit Subwoofer Enclosure
  • 400-Watt RMS Power
  • High Mount Ported
  • Mounts Behind Dashboard on Passenger Side
  • Quick Installation with Installer Friendly Design
  • Fully assembled Out of the Box

MUD600.1 Key Features

  • High Efficiency Class D Topology
  • Compact Design Enables Installation Anywhere
  • Conformal Coated Printed Circuit Board that Resists Moisture
  • Fixed Crossovers
  • High and Low Level Inputs
  • 600-Watts RMS Power

Plug and Play Connections

The PROXP-20RC-THUNDER-W includes all the wiring required to connect each component. All wiring is ruggedly designed to endure the harsh environments RZRs often find themselves in. All wires are terminated with the appropriate plug for the component being connected, making installation easy.

Installation Videos

2020 and newer Polaris RZR Pro XP with Ride Command Subwoofer Kit (PROXP-20RC-THUNDER-W) Installation

Owners Manual PROXP-20-SW Manual (16 pages) 5 MB View | Download
Owners Manual MUD600-1 Owners Manual (24 pages) 274 KB View | Download