A crazy 1 1/2″ 4 into 2 system exiting into 2″ reverse cone muffler. The mufflers had to sit inside the frame and the outer section of header pipe was to remain tight and follow the profile of the frame. Custom lower bends were made to copy the frame radius with my own 2 into 1 merge collectors. This bike is an absolute beast with Mikuni RS34 pumper smooth bores, 810cc barrels and a super lumpy cam…more on this bike later 🙂