Mazda CX-9 Roof Rack Side Rails . It's easy to conveniently stow your gear with the CX-9 roof rack and lifestyle attachments. There's plenty of room and options for fun, road-bound adventures. This is a set of Roof Rails . Genuine Mazda CX-9 Accessories and Mazda CX-9 Parts offer the style, comfort, quality and satisfaction that make driving a Mazda CX-9 even more rewarding. Designed and guaranteed to fit your Mazda CX-9 perfectly inside and out, they are the only Mazda CX-9 accessories built to the same quality standards as your Mazda CX-9.