Thanks for all the info.
I like OEM STOCK exhaust look incl. the end caps. I like that gloss black design. So would be great to have nice sound and keep the stock exhaust.
Beside that I live in Europe and we have strict noise regulations. Its not best idea to use aftermarket exhaust system without CE marks and approval. So my idea is use Fullsac cores to keep original exhaust. I will not meet the noise regulations but if police stops me, i can at least argue that i use stock factory exhaust providing the CE marks which are printed on the exhaust from factory. At least something.... I have almost 0 problems in my country. But going for long trip around Europe especially in Germany, Austria i can have serious problems with police. For this reason i was thinking about using Fullsac 2.25 in my country and stock cores as exchange cores for long trips outside my country. So if i buy 1.75 instead of stock (long trips) and 2.25 (short daily use) , how difficult is to change it? Is it just few minutes job?
I do not want to change head pipe. Just the muffler cores. But i just hope it makes sense to change just the muffler cores and sound difference is noticeable. The stock sound is terrible. I am coming from softails. My last bike was Slim S with open Rush pipes - very loud. I just did not travel around Europe with this bike so i did not care.....
I don't even know if the 2018 CVO RG has standard mufflers or already some improved Screaming Eagle mufflers. Because my stock end caps look exactly like Defiance end caps from Harley catalogue. According catalogue these Defiance end caps fit Screaming Eagle Street Cannon mufflers only. But they do not fit CVO models. Its confusing...It looks like we have some special mufflers and end caps made just for CVO which are not offered in standard catalogue ? I am asking because Fullsac webpage says, they cores do not fit Screaming Eagle mufflers.
By the way my bike still stay at dealer showroom with 0 mileage. I am waiting for spring.
Fullsac is an excellent idea and yes they will fit your 2018. Everything you need is on Steve's website. https://fullsac.com/ The original cores can get pretty beat up upon removal so I would say no on the reuse question and there really would be no reason to. The larger the core the louder they will be, but even the 2.25's are not over the top loud, but you could purchase the 1.75" for a quieter sound and the 2.25" for a louder sound. Once you have Fullsacc cores installed you can easily interchange them as necessary. I am running the 2" with Techmat. Are you concerned with emissions? If so you may not want to change the head pipe, although it's highly recommended for performance, sound and getting rid of the unwanted heat that the catalytic converter creates. If you can't find the answers to your questions on Fullsac's website just email them and Steve or Sherry will gladly answer them for you.