The most important component that makes the Panther possible is the patented transfer case that converts the power from the motor to the jet and the transmission. WaterCar Inc. designed and patented their revolutionary amphibious transfer case in 2004; it has proved to be indestructible. It uses the Winter's Quick Change gears and components that can handle over a thousand HP. When this is combined with the stainless steel Panther Jet that has been tried and proven with over 25 years and over 35,000 units sold... This amphibious drive train combination is truly unbeatable.