Do you mean carbon frame rail protectors? If you get the frame down during a crash the bike is probably toast, since it's so damn slim.
I did buy the mushroom thingies for mine, but never got round to fitting them as I couldn't find anywhere suitable...
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball