Now that I have my new ride, I stuggle with the decision of pipes. Most companies are saying that they're slip ons are working on the 09's. I tried Vance and Hines and they are not looking right on the back of ther SERG with the facia and extended bags. Not to mention the mounting brackets move the V&H pipe about 1/2 lower than stock.
Bub7 makes a reverse slash cut that would flow with with rear of the bike and does not appear to have an 1/2" mounting bracket, it appears they mount flush to HD bracket.
D and D makes a set too and they are also close the 4" diameter of the stock. Cobra makes a great looking 4" billet pipe very similar to the stock and I really like the look of the stock. However, I've only seen Cobra's on a couple of bikes and they weren't baggers. And it appears they have the same mounting style as the V&H.
Luckily, I have befriended the parts manager and he is ordering a bunch of different styles for me and helping me trying them out. Whatever won't work, he'll put on a bike on the floor as an accessory.