Hi,

I am working on a scott arapahoe, and I am currently looking at what may be conserved or need to be replaced.

I have seen that on all cantilever , the plastic is broken like on the picture
One is even with no plastic at all, and all was working properly on the bike.

Do they need to be replaced due to security reasons ?
is this plastic only here in order to make the setup of the brake easier ?
Is it possible to find plactic replacement somewhere ?

Thanks in advance for any advice

I personally don't dislike the look without them. I mean with the spring visible.