The Gold Wing Trikes are longer and wider than HD's. CSC, Hannigan and Roadsmith are with in a half inch in wheelbase of each other. They also have Independent suspensions for the most part. HD is a solid axle design and you will feel it! The Gold Wings are cooler running. The HD can be made to ride a little cooler for approx. $1500-$2000 in engine mods. The HD has the "cool" factor going for it. And a fit and finish that is the best in the business. Their paint is awesome! The most important decision is picking an installer. A bad install and you have big problems! Good luck and have fun. Questions? Fire away.ThumbUp Tom :Trike1: