01-01-16, 08:01 PM
I have in the past (on my own bikes) run a rear brake with no dust seals in but only as a temporary measure. If the main seal is in good condition it is not a problem..... I wouldn't do it on a front brake but on a rear as a stopgap measure its not a problem.
Owner of Motorcycle Republic, Specialist in unfucking things that others have fucked up.