SSV Works custom molded sub enclosure is designed for a 10″ subwoofer and bolts into the open space behind the driver or passenger seat, clear of the seat. NO CUTTING REQUIRED, the box simply bolts in and provides the proper airspace required for a 10″ woofer. They are 100% fiberglass for the best sound quality and bass response. They are finished in a black texture coat to match Polaris textures and can be custom painted to match your color scheme. – Includes stainless mounting hardware and step-by-step installation instructions. NOTE: requires external amplifier.