The North Dyno LTD was the version of the North Dyno between the 2012 Dyno and 2013 Dyno. Released at the very end of the 2012 season for racers to use at the 2012 Course Race World Championship.
The LTD is closer to the 2013 model than the 2012 model. The LTD has 5 struts like 2013, but still has pullies on the bridle. Because it has pullies, it can be flown 4 line or 5 line, North says the 2013 with no pullies has to be flown 5 line for the safety to work.