Join Date: Jan 2014
Location: South Central PA
There are two different set of Mk45's. M8 sets with the large right inlet, and the old style sets with the small inlets on both sides.
I think the S&S power duals use the old style cans. I would just call them and double check.
There is no advantage to the large left opening, even the oem can is restricted back to 1 3/4 inch inside of the large opening.
The large opening is just about being able to build the head pipe cheaper.
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