They will work with the jardines, but only if you open the holes in the mounting flanges up about an 1/8th of an inch on one side. The Jars head pipes comes out of the head at a different angle than the stock log does and it kicks the flange covers out a bit to where one side will mount and the other will comes close, but (sorry Monica) no cigar. After slotting the hole just a bit, they fit fine and don't touch the head pipe. As the exhaust flange ins thinner on the Jardines than on the stock exhaust, I bought a pack of stainless steel washers at Lowes and added a couple to each stud. Works a charm. I gotta add too that they really complete the look of the pipes and really should have come as standard equipment.