The 4-CORE system of extruded aluminum rails on Go Rhino's XRS, CEROS and SRM Series of products includes a wide variety of overlanding and trail accessories. The XRS/SRM 4-CORE Floor Plate Insert Kit allows you to mount one 4-CORE-equipped product onto another, such as attaching an SRM Basket Rack on top of the XRS Xtreme Rack. XRS/SRM 4-CORE Floor Plate Insert Kit comes with a Limited Lifetime warranty on materials and construction and a 5 year warranty on the Textured Black Finish.