Phantom's Revenge (formerly known as Steel Phantom) is a steel roller coaster at Kennywood in West Mifflin, Pennsylvania, United States. When it opened in 1991, it was the fastest roller coaster and had the longest drop of any roller coaster in the world. The ride was originally manufactured by Arrow Dynamics. After the 2000 season, D.H. Morgan Manufacturing was brought in to renovate the ride, most notably to remove the four inversions.