The Jersey Devil Coaster uses four trains, each containing 12 seats, which achieve a maximum speed of 58 miles per hour (93 km/h).

[7] The following month, Six Flags announced that, to reduce its financial losses during the pandemic, it would defer numerous capital projects that had been scheduled for its parks during the 2020 season.

[8] Although Six Flags Great Adventure resumed operations on July 3, 2020,[9][10] the park announced in June that the opening of the Jersey Devil Coaster had been delayed to the 2021 season.

[15][16] The roller coaster's chain lift, ride controls, and trains had yet to be installed at the time, and Six Flags also had to obtain permits from New Jersey government officials.

[13][15] Six Flags Great Adventure conducted its first test runs in late May 2021, simulating the weights of passengers using water-filled dummies.

[18] The ride uses RMC's single-rail I-beam Raptor Track, manufactured by TCN & Co. of Marlton, New Jersey.

[15][18] Riders sit on low seats in a single-file arrangement, placing their legs on either side of the track.

"[18] A writer for Attractions Magazine said that, rather than being the tallest, fastest, or most intense roller coaster at Six Flags Great Adventure, "the Jersey Devil offers a perfect balance between incredibly exciting moments and fun twists, turns, and hills.