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Roller Coaster: Ninja
Amusement Park: Six Flags St. Louis (Eureka, Missouri, USA)
Classification: Roller Coaster
Type: Steel - Sit Down
Status: Operating since 4/1989
Relocations: Expo '86 as Scream Machine
Six Flags St. Louis as Ninja
Make / Model: Vekoma / MK-1200 / Custom MK-1200
Builder: Arrow Dynamics
 
Length: 2430' 
Height: 108' 3" 
Inversions: 4 
Speed: 54.7 mph 
Duration: 2:00 
Elements: Loop
Sidewinder
Double Corkscrew
 
 
Trains: 3 trains with 7 cars per train. Riders are arranged 2 across in 2 rows for a total of 28 riders per train.
 
History: This roller coaster was initially started by Arrow. After the project started, Arrow fell into bankruptcy. The project was then picked up and completed by Vekoma.
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