This
is a A JUST REBUILT 1986 - 1989 HONDA TRX250R rear master
cylinder with new rebuild kit,new shaft ,and clevis .These are not available new from honda anymore.
IT WOULD BE BEST FOR YOU TO DRAIN BRAKE LINE AND RESEVOIR BEFORE INSTALLATION OF MASTER CYLINDER.
IT WOULD BE BEST FOR YOU TO DRAIN BRAKE LINE AND RESEVOIR BEFORE INSTALLATION OF MASTER CYLINDER.