- Tusk Soft Upper Doors makes riding in any condition more enjoyable. The Tusk Soft Upper Doors keep the cold, wet, and other adverse weather conditions out of the cab of your machine. Upper door frames are constructed of powder coated steel tubing making a tight seal to your machine. Doors can easily be removed with quick release mounting systems. Made of high-quality materials that have been UV and cold crack tested, they are made to last.