Click or scroll to zoom Tap or pinch to zoom BW Trailer Companion 5th Wheel Hitch (kit) COMPLETE 20K SLIDER UNIT by B&W Trailer Hitches $1,519.00 SKU RVK3405 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart The Companion Slider utilizes the B&W under-bed mounting system.