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Rollercoaster: Extremeroller (5/31/1983 A 1988)
EXT (5/31/1983 A 1988)
Screamroller (1976 A 1982)
Parco Divertimenti: Worlds of Fun (Kansas City, Missouri, USA)
Classification: Rollercoaster
Tipo: Steel - Sit Down
Stato: Defunct
Operated da 1976 A 1988
Trasferimenti: Worlds of Fun come Extremeroller
Formosa WonderWorld come Spiral
Modello / Modello: Arrow Dynamics / All Models / Corkscrew
Capacità: 1800 ospiti all'ora
 
Lunghezza: 1250' 
Altezza: 70' 
Inversioni: 2 
Velocità: 50 m/h 
Durata: 1:10 
Elementi: Double Corkscrew 
 
History: For the 1983 season standup trains were put on the Screamroller's track and the ride was called the Extremeroller or E.X.T.  This made the Extremeroller the first looping standup roller coaster in North America.  The track and structure were never designed for such trains and this proved not to be a practical in time.  Because of this the standup trains were removed and the original sitdown trains were reinstalled.
Facts: ACE (American Coaster Enthusiasts)  has the standup trains in storage.
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