Picked up some Pre-enjoyed 2015 black pipes from a member. Had them repainted and mounted last weekend on my black 2013. The fit wasn't perfect, a slight gap between the pipes and header covers. Definitely a noticeable difference in sound between the 2013 & 2015. A bit throatier but still a nice, quiet stock sound at speed. The black pipes on the black bike look awesome. Very happy with the change for a fairly minimal investment.