If the caliper doesn't come with them, you'll need a new olive and barb to do the job properly.
Ah okay, I can't imagine it does. Will any barb and olive do, or are there specific ones for each type of shimano hose?
There are two types for Shimano hoses, one type for the older BH59 hose and a different set for the newer BH90 hose.
@hazzelfrazzel started
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If the caliper doesn't come with them, you'll need a new olive and barb to do the job properly.