The Big Bear Choppers The Sled is a custom-built chopper-style motorcycle from Big Bear Choppers, an American manufacturer of custom chopper motorcycles. It features an all-aluminum frame and a large 109 cubic-inch S&S V-twin engine. The Sled features 16-inch wheels, an extended fork, a sculpted gas tank, an LED rear fender light, a 2.2-gallon fuel tank, and an adjustable seat with a built-in backrest.