| Roller Coaster: | Viper |
| Amusement Park: | Six Flags Great America (Gurnee, Illinois, USA) |
| Classification: | Roller Coaster |
| Type: | Wood - Sit Down |
| Status: | Operating since 4/29/1995 |
| Track layout: | Cyclone |
| Capacity: | 1000 riders per hour |
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| Length: | 3458' | |
| Height: | 100' | |
| Drop: | 80' | |
| Inversions: | 0 | |
| Speed: | 50 mph | |
| Duration: | 1:45 | |
| Max Vertical Angle: | 53 Degrees | |
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| Trains: | 2 trains with 5 cars per train. Riders are arranged 2 across in 3 rows for a total of 30 riders per train. |
| Restrictions: | Riders must be 48" or taller to ride. |
| Built by: | Philadelphia Toboggan Coasters, Inc. |
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| Notes: | The Viper is a mirror image of the original Cyclone at Coney Island's Astroland. |