ANSWER: Our largest carrier is the VH-SPORT RO it has a carrying capacity of 600 lbs and the rail length is 77.5″ and the width is 7.8″. You can find other dimensions at http://www.versahaul.com/vhsportro.php
A gsxr stretched 14 longer than the factory 57 inch wheelbase will not fit.
Below is a calculator to determine the fit size.