ALLtrailer bearings? Hmmm...something don't seem right there.
but trailer bearings are cheep, but please make absolutely sure its all good before blasting down the highway.
Don't forget, and many people do, that information passed in a forum setting should be regarded as suggestions and not factual.
Please do your homework here.
Don't take this the wrong way, but where do you think harley gets it's bearings from? The same place the national bearing supply chains get there's from. If it makes you feel better to spend 100 bucks on the same bearing you can get for 10 bucks then by all means get the 100 dollar one. The same is true with Polaris, when i was in school we ordered a ton of parts for different engines that we worked on, and guess where we went for bearings, NOT Polaris we went to the local National bushing supply store and ordered the same bearing polaris uses for only 6 bucks. The manufactures triple the prices on everything they sell, the same is at auto dealers, buyer beware and do your research. But just know you will be safe buying a timken bearing, it's the exact same as harley's.