Had a cambelt changed and all the others (5 in total) when we took the pulley off you can see that the rubber had started to come away from the pulleys
would make a right mess coming off at 3000rpm+
Needs to be original replacement because of the floating crankshaft or what ever they call it. The rubber takes the vibrations out and also gives it a bit of play.
Had a look on camskill and couldnt find it. Did not think they sold em.