no bleeding, you may need to pull the allen wrench bolts, which can be a bitch, soooo tight. Just get a foot long cheater bar on them. but you may not need to pull the bridge bolts. as i said, no bleeding needed, but be careful when pushing fluid back in with the c clamp, it can really fuck up the abs, and open the resivior and try to take out any extra fluid. ideally you should open the bleeders and push the excess fluid out that way but that probably would require bleeding, and they can be rusted, and if one breaks off, there goes the caliper.