Many have asked about true dual exhausts for Harleys. There are some advantages and some disadvantages to the systems.

True duals will loose a bit of torque on the bottom end from the loss of scavenging but some like them for looks and sound in any event. It's a personal preference for the most part. They will also remove some of the heat on the newer bikes from the under leg area because of the absence of the pipe from the rear cylinder that exits out the right side.

You also have to be careful which mufflers you run when you change the pipes to true duals. The stock muffler on the left side has very little flow to force the exhaust to exit to the right muffler which provides scavenging. This is due to the baffling in the muffler on the later models.

Using the TD setup with stock mufflers will cause a problem for the rear cylinder because there will not be sufficient flow to exhaust the cylinder. Changing to slipons like Vance & Heinz , Reinhardts or the equivalent will solve this problem and allow both cylinders to breathe properly.

Reinhardt True Duals have a stepped header design and end with a larger diameter pipe then the stock setup. The Reinhardt true dual mufflers only work with the Reinhardt true dual head pipes.

I have the Fullsac true dual system with my stock mufflers. The mufflers are catalysts and each side appears identical internally, and now they sound balanced and identical. With this arrangement the performance and ridability seems unchanged. My passenger appreciates the lower heat on the right side after removing the crossover. I figure the substantial back pressure of the stock cans provides balanced back pressure despite the slight length differences of the pipe, since the pipes have little obstruction. My FLHT is basically stock (new carb needle) and performs like an enrichened stock bike. I've read the 2006 stock mufflers sound better than other years. IMHO this is true but they are still a little quiet for me. My experience has proven that loud(er) pipes can be a safety advantage.

There's one thing here to be very careful about when using the stock mufflers on a TD setup.

The stock mufflers regardless of the look are sometimes not balanced as far as backpressure internally, like in the case of the 07 bikes where the left side is used basically as a sound chamber more so than an outlet. The pipe in the left side is only a short perforated piece about 6" at the rear of the muffler unlike the right side where it is a flow through muffler. The purpose of this setup is to force the rear cylinder to exit mainly through the right muffler and give better scavenging to the exhaust.
If these mufflers are used on a TD pipe setup, you will run into a problem with the rear cylinder not being able to exhaust properly and it can damage the engine.
Running a TD setup requires a balanced set of after market mufflers or a pair from HD that has equal exhaust flow through both.

In my opinion, True Duals are the way to go if you want to effectively address the heat issues on the newer touring bikes. The torque loss is minimal, IMO, and the overall benefit of loosing the right side crossover "cooker" pipe is WORTH it. Another added benefit is the added ease of maintenance and overall open and unobstructed view of those beautiful "Twins" from the right side. There are multiple options including the very popular Rinehart and Vance & Hines. Take the time to look, listen and learn before choosing a system. Spend a weekend day at your favorite dealer and look and listen to the bikes as they roll in and roll out. Sound is a personal thing and true beauty is only in the ear of the listener.

what are the options for the 09 CVO