3Pkg Rockford Fosgate PBR400X4D 4-Channel 400W Amplifier + PBR300X1 300W Monoblock Amplifier + RFRZ-K4D Installation Kit for Select Polaris RZR. The Rockford PBR400X4D is a full-range 4-channel amplifier designed for stereo front/rear systems that requires little space.
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