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Nope, you don't need the rubber doobries. They just seal the cable off but it will work without them.
Rival hydro - does it come pre-bled from the factory? Are the lines a suitable length? Is the routing external? If yes, then most likely...
Howard-
Yeah I get that they'll work without em just wondered if there's a special tendency with bb7s to suck up grime through the cable hole or why they even have that boot to begin with. Spyres on my other bike has no rubber boots. Maybe it's a personality test like using/not using condoms or something.
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no, one of them definitely needs bleeding. Just wondering if I can do it without a kit :-)
russmeyer
graunch
I'm in the process of restoring some used bb7s to some semblance of functionality again and progress is good. They're missing the bottom cable boot, the small one in the pic below. Are they necessary at all? Bike will be used for city commuting, no muddy cx stuff.