I picked up my 2017 Ri237 in August of 2016 just as they were released. The silent stinger was still in R&D and not available then. My dealer told me that when it became available later in 2016, they would be able to retro-fit it. When 2017 came, he told me they had been misinformed and it is NOT retro fit available. Has that changed? Has anyone been able to retro fit it?
Thanks!