I run Jardines and am happy with them. I think the Jardine header is a little warmer than stock.. but no different than any other bike with exhaust pipes on the right side. It's not a problem for me, and I live in San Antonio, TX.. They do have a deeper sound than the Predators I've heard. Mine bolted right up. The only problem I had with the Jardines was the header to muffler junction. Jardine says to use a high-heat sealant at this joint. It's just a slip joint, there are not bolts, clamps, springs, etc.. Apparently most people don't have a problem with it, but I never could get that joint to seal. So I just decided to weld the system together at the header junction. No problems since. The exhaust system still comes off easy enough, just have to remove the header with the right side muffler. But that's not something I should have to do often..