The stock Buell XB muffler is actually an engineering marvel due to the fact it performs quite well throughout the RPM range while meeting the requirements of very strict noise regulations. XB12 models even have the famous Active Muffler Control System that effectively changes the length of the exhaust system to match the engine RPMs and throttle position. To meet very strict design parameters, these mufflers ended up being very big, heavy, overly complex, and to many, UGLY. They also don’t provide the V-Twin sound so many Buell owners are fond of.
For the performance (and sound) minded, Buell, produced a “Race Use Only” package that included a muffler, high flow air filter and matching ECM. Although this muffler is similar to the stock unit in size and shape, it is very different on the inside. In fact, the actual exhaust is simply a 2” long pipe with perforations on the end section, which is surrounded by a packing material for noise suppression. This pipe exits to a hollow chamber at the back of the muffler that has two outlets. Because this “race” muffler needed to fit into the same mounts as the stock unit and be used as a jacking point it is still quite large and heavy.
It’s also not a true “dual” system. This muffler does perform quite well and is often the standard by which the others are measured against. However, it is ultimately a very simple design housed in a seemingly complex package. Contrary to popular belief, you don’t need a large muffler to get great performance. Also, these mufflers can be quite expensive, if you can find one.
Some of the exhaust systems on the market are of a dual-can or “large diameter, high flow" design. While increasing exhaust note, they actually do this at the expense of peak power performance, even compared to the stock exhaust.
Tuning these systems for optimum drivability can also prove to be difficult.
XB-ST SLIP-ON EXHAUST
Revision Moto's philosophy is different; when you buy an exhaust for your bike it should run properly, without having to spend more money or do your own tuning.
That's why a matching tune is included in the price! Simply install the file into your ECM using a BUELLtooth wireless interface and an Android device. They're not "off-the-shelf" tunes either. They are developed using Wideband sensor-equipped motorcycles after numerous data logging and testing sessions. Nobody else develops and shares tunes for their Buell exhaust systems.