To integrate with the X1'21 chassis side braces, the rear link brace was redesigned as part of the chassis Multi-Flex system and also functions as the mounting point for the independent wing mount system. The rear link brace design allows for a wide range of battery placement adjustments and features a convenient O-ring battery mounting system. The graphite rear link brace is the mounting point for the side tubes and side springs, and functions as a backstop for the battery pack as well.
