TPS-A500.1+MS12LW+RPB1 RZR

This bundle pairs the Hifonics THOR TPS-A500.1 mono amplifier with a Rockville MS12LW 12-inch free air subwoofer, giving a Polaris RZR, ATV, UTV, or golf cart a bass upgrade that doesn't require building or buying a separate enclosure. The amplifier carries ABYC and ASTM marine certification, meaning its circuit boards are conformal coated to resist corrosion from salt spray and general moisture, which matters as much in an open-air UTV as it does on a boat. It runs in mono mode at 500 watts into a 2-ohm load or 250 watts at 4 ohms, with an onboard low pass filter and a bass boost of up to 12dB centered at 45Hz for shaping the low end without a separate processor. Gold-plated connections resist corrosion at the terminals, and quick-disconnect wiring lets you pull the amp off before winter storage or as a theft deterrent. The MS12LW subwoofer is built to run without an enclosure thanks to its free-air design, using a polypropylene cone with a rubber edge and a 100-ounce double-stacked magnet that lets it handle up to 700 watts RMS. A molded ABS plastic basket resists cracking under vibration and impact, and the whole subwoofer is fully marinized with a waterproof coating, matching the amplifier's water-resistant rating for the same rough-terrain environment. Built-in LEDs add a visual touch once installed, and the white finish stands out against darker UTV interiors for a different look than the standard black option.