If it is a true +4 depending on what gearing your running it should take some where around 114 to 117/118 links.

It is generally recommended to get a 120 link chain and you end up taking out a few lengths.


IMHO; I would also recommend plating the top and bottom of your creation and having it over lap your cuts by at least a couple inches that way it does not crack on your weld lines in the middle of a race.