Once the tallest roller coaster in the world, Shock Wave was also among the first to feature back-to-back vertical loops. Manufactured by Anton Schwarzkopf, it underwent a major refurbishment in 2008. After the initial climb to 116 feet, prepare for a 100 foot drop and two back-to-back loops that subject riders to 5.9Gs. Shock Wave is one of few looping roller coasters to employ only a lap bar with gravity holding you in place..