Thule Canyon Extension Cargo Basket Accessory The Basket Extension extends the cargo area of the Canyon roof basket (sold separately) by 20" East to install and fits seamlessly Add the Accessory Crossbars (sold separately) and you can carry all of your gear and access it easily Thule 692 Stretch Cargo Net (sold separately) helps secure your contents This extension only is compatible with the Thule Canyon, 859 and not the new Canyon, 859XT.