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[Gkup]

Anyone using 4.5" RC slip on's. Curious how the fit in the openings on the extended bags of a Street Glide.

[DOCGSS]

I have them on my 2014 CVO RK no problem.

[Gkup]

How bout a picture?

[Doc 1]

RC slip-ons, that I have seen, are a 2.5'' baffle, these larger baffles hurt low to midrange performance, throttle response, and o2 sensor operation from 1000 rpm to 3000 rpm. The more cam overlap used the worse the 2.5 baffle performs where you ride all day long. It's been my experience that any 2'' baffle will get you the best performance over all, than what a 2.25 to 2.50'' baffles can do. Be careful in your selections.....some pipes even have 3'' baffles today.
Doc

[Tn.Heritage]

RC slip-ons, that I have seen, are a 2.5'' baffle, these larger baffles hurt low to midrange performance, throttle response, and o2 sensor operation from 1000 rpm to 3000 rpm. The more cam overlap used the worse the 2.5 baffle performs where you ride all day long. It's been my experience that any 2'' baffle will get you the best performance over all, than what a 2.25 to 2.50'' baffles can do. Be careful in your selections.....some pipes even have 3'' baffles today.
Doc

This is so true, I just swapped from a fuel-moto Ceramic 2-1-2 pipe with RC's for a Rush Wrath with the 2.5" baffle and the difference was amazing in ride ability. Had way to much muffler volume with the RC set up and killed my bottom where I rode. Nothing wrong with the fuel-Moto exhaust if properly set up but the combo wasn't there. I'll post my chart and it's an SAE Chart but I didn't capture that with my I-Phone when I took the picture but I promise it is.
 Notice where my Tq. now comes on at and where it did before, it feels like a different bike and a lot more fun to ride !!!

[GMR-PERFORMANCE]

2.0 baffle on slip on's tend be the best middle or the road.. For the 2-1 I still like the 2.25 baffle in the pipe or pipe cam builds. Builds much better low end.. Louvered over perf core again louvered works better.

Here is an example of choosing a muffler with too large of a baffle.. Not even going to get into the 02 readings and tune issues.  I dump the one file int he wrong folder this is the same bike with nothing more than a muffler swap. To show the customer why his " choice" of muffler is the problem and not the tune.

[GMR-PERFORMANCE]

The RC 4.5 muffler  baffle is 2.5 louvered to 3.0 perf on the newest versions any ways .. The older 4.0 is a 2.5 core straight no step..

[Gkup]

Ok thanks for the input but now I'm really confused. Bottom line are the RC 4.5" worth a darn or not. They look cool but I don't want to compromise the performance just for looks. If low end torque is going to be a problem I may have to re consider

[GMR-PERFORMANCE]

It was covered a few post earlier .. the core is too large. to not have some loss of low end power. with a stock engine and stock cams it would be less noticeable vs with a cam with more over lap. In the end it will not make the power as another one with a correctly louvered 2.0 core.