During its 2008 model line-up dealers & media presentation in San Diego, CA, Big Dog Motorcycles unveiled a new model called “Big Dog Mutt”. It’s a 250 mm wide tire Softail type bike in a 6-inch backbone stretch frame, spoke wheels, featuring hidden shock suspension and an S&S 117 cubic inch engine (1916 cc). The Mutt is conceived to be an entry point level bike. Big Dog motorcycles is the world’s largest manufacturer of custom motorcycles and scored high marks in 2007 with both dealers and retail clients. More to come. Big Dog Motorcycles.