Generally, an extended warranty on a travel trailer is not worth it. There are some horror stories here and there about failures after the warranty expire but the decisions is yours. Why dealers offer an extended warranty the day you take delivery of a trailer already under factory warranty is beyond me. Why finance more up front for something you will probably never use. I guess I got luck with my old 26BH...5.5 years and I never had an issue with it that I couldn't resolve on my own.
2017 Ford F-250 6.2 gas
2018 Jayco 28BHBE
US Army veteran