Poll any driver of a Honda B Series what their favorite exhaust system is and you're likely to hear "Mugen Twin Loop" as a top pick.
Here are a few rare pictures of the genuine Twin Loop as seen in Mugen's showroom in Tokyo.
In this cutaway you can see that the pipes are looped back through muffler chamber a second time. The theory behind this unique muffle is based on low frequency sound waves canceling the high frequency sound waves. Because this dampens the sound so effectively, the muffler can be very unrestricted and still be nice and quiet. The tone of the Mugen Twin Loop is truly amazing -- almost musical!
Here is a cutaway of the Mugen center resonator. The workmanship is brilliant!
You can check out the currently available Mugen exhaust components in our online store.