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MotoGP God
Bikes: 748S, HM1100S, V4SP, Was: DD-A #111
Posts: 13,088
Join Date: Feb 2002
Location: Back in Essex
Mood: Passion Killer
You'll find that the rubber perishes enough (even on a year old bike!) that it sticks itself firmly to the plastic so that they're a real pain to get off in one piece.
I've got a few spares from when I replaced mine, so let me know if you need any, but they're only a few pence from Ducati if I remember correctly.