A friend of mine just bought a 2019 FX21LE with the Skeeter trailer. I noticed the bow stop roller was "oversized" and looks very similar, if not exact, to the Stoltz Ult-4. My friend did not add this to the trailer, so unless the dealer simply installed, it appears this to be standard issue on 2019 models. Looks like a better option than previous 4" roller with small side bar rollers.