Akrapovic Slip-On Instructions D'installation page 13

6. For optional carbon fiber muffler bracket: asemble passenger's footrest with the Akrapovič carbon fiber muffler
bracket using Akrapovič bolts, washers and distance bushes (Figure 14).
Figure 14
Attach asembled passenger's footrest to the subframe, using stock bolts or in case of optional carbon fiber bracket
7.
use Akrapovič bolts (Figure 15).
Figure 15
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22 Nm
16 ftlb