Vance and Hine monster ovals, a tad louder than stock and few people are running them. I've heard them in person and they have a mellow sound, much deeper than the stock pipes too. Not that much louder either.
2012 Road Glide Custom Vivid Black, SE254E Cam's, Drago's head pipes, CFR's, SE Race Tuner, SE Heavy Breather, Lowered 1" Rear. This is just the begining. . . .