yea thay replace the the parts if they leak, iv had a new calliper and master cyclinder, but they dont have very good customer service. i broke the blade on my marta by pulling it, sent it back expecting it to be replaced because it seemed like a manufacturing defect, i only used it a few time 5 at most but they said that i must have crashed to snap it, and they wanted me to pay 25 quid for a new blade(25 for a pair on cnc) so i asked if they could return it to me got it back after they charged me 6.50 pnp and they have strached wv on the brake, master cyclinder and calliper which i think mean warranty void not to sure how replacing my level balde my self for half the price voids the warranty i am a qualified bike mechanic so after that id say buy a hope as they have decent customer service