I had the 4 in Rhinehart slip ons, on my 2013 Ultra 103, dealer said they would work just fine.
I would think that would be the same for the 110,
Dealers sell the most popular exhaust and the sounds the people like. Dealers are not the place to go for Performance.
Not the same exhaust, but going to V&H High Outputs (4" or 4.5" I think) made my bike wake up 500 RPM or so later than the FatShotz I had on. I had no clue a baffle that size would kill that much low end. I learned the hard way.
The Vance and Hines High Outputs are one of the most popular pipes, people love the sound and looks. As you found out, you loose low end torque and torque at the normal riding RPM 2500-3000 RPM.
I too learned the hard way. Funny thing was dealer was very quick to buy my Hi Outputs back, only lost 200 dollars. Got the fullsac cores for the stock pipe, and ended up with money in my pocket after the mistake.
Saved me a lot on pipes since as I have had four bikes since the mistake, and all have had the fullsac baffles.