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Even the tiniest rupture may allow your hydraulics to become aerated, with the resulting spongy brake's scenario. Replacing this item as a matter of course during your brake service or overhaul is just good, safe practice. A bit like wearing other protective items made of rubber which turn out to be useless if they have even the tiniest pin prick!

For all the other essential replacement consumables, check out the online catalogue or 'parts list' fiche for your model, and enjoy low prices and a prompt delivery service.