2021 Yamaha MT-09 w/ Dominator HP5 exhaust and 2 custom-made dB killers.

The dB killer in the end is the Dominator but cut down to 40mm length from the original 100mm, and it has been fully inserted as far as it can, with the retaining screw acting a barrier to removal. The flange was enlarged a little to make it a very tight fit. A second DB killer is at the entry to the muffler - that's a perforated baffle, similar to Leo Vince design. Dominator's optional mid-pipe muffler is not fitted - the mid pipe is straight through.