Since you have 3,500 lb trailer axles from Lippert the correct bearing kit is the part # BK2-100. This comes with bearings, races, and a seal for each hub plus a cotter pin and tang washer. Or we have the part # DBRKHW35EZ which comes with the correct bearings, seals, lug nuts, and dust covers for both sides of a 3,500 lb axle like you have. If you don't need the races or cotter pins (you probably don't) this would be the way to go. view full answer...
I recommend the Dexter E-Z Flex Suspension Kit for your 2020 Keystone Hideout 301DBS 5th Wheel camper. I was unable to determine the length of your current equalizers so you will need to measure them to ensure you find the correct kit.
The Dexter E-Z Flex Suspension Kit # K71-652-00 fits equalizers with a bolt hole to bolt hole center of 5-1/4" to 6-1/4"(see image).
The Dexter E-Z Flex Suspension Kit # K71-653-00 fits equalizers with a bolt hole to bolt hole center of 7-1/4" to 8-1/4"(see... view full answer...