This roll bar padding fits the new requirement. It covers half of the bar and is meant to be zip tied onto the par. You are to use this on any surface that your helmet could touch. These come in three foot lengths and two diameters. 1.5" and 1.75". They manufacturer states that they can be used 1/4" larger and smaller than the actual size. The pictures are of the different sizes on a 1.5" roll bar.

Roll Bar Padding SFI 45:1