Storage Rack Frame for Kayak & SUP. Starting with the base rack assembly build a Kayak/SUP storage rack to fit your specific needs.. No more lugging around your heavy kayak or paddleboard after a long day on the water. With Magma's Kayak/SUP Dock Storage Rack System your problems are solved.. Building this rack system is simple, start with the base rack, R10-1001, and purchase the specific arms separately that best fit your needs. Storage rack arms (sold separately) are available in either strai