C 69 toray ud carbon composite frameset a number of changes were made to the burasl to further decrease the frame weight the carbon lay up was reengineered to utilize longer strips of carbon pre preg instead of shorter pieces minimizing the number of overlapping layers burasls front triangle is made from neilpryde c69 unidirectional carbon fibre and incorporates our proprietary exoskeleton technology external carbon fibre ribs integrated in the key joints of the monocoque front triangle e