Neither the stock bumper nor the Warn bumper is heavy, but it's a little awkward to maneuver either one by yourself. Eddy, the owner/driver (right) and his roommate Terry (left) did the bumper handling. As mentioned, four bolts hold the bumper to the frame. No drilling is required. The winch-mounting holes in the bumper are predrilled too. The bolt pattern accommodates multiple accessories; you won't end up using all these holes for mounting the winch.