Leaping Jaguar and Charging Bull motorcycles by Massow Concept Cycles. The Jaguar is based on car company Jaguar (although it reminds me of the Transformer Ravage), and the bull is intended to represent a variety of companies including Lamborghini, Merril Lynch, and the Chicago Bulls. There are several more concepts on display at the MCC site. Via these sites.
*Previously: Predator motorcycle.
*Buy motorcycle jackets at Amazon.