shock upgrade? Well I'll give you a hint. Comfortable for two up and it will be too stiff for solo riding. Comfortable for solo and you'll wear em out too fast if you ride a lot two up. Being as how you intend to ride two up seldom, then get the normal springs.
Yes, these motosickles handle two up riding well. The biggest nays go to lack of farkle power and lack of storage space for two up riding.
