The back axle on my 26’ Grand Design rv bent while on a trip. I made it home, researched the problem and found the axle is minimum capacity. I saw this company online and after talking to Carson had a heavier one built. It fit perfectly. I used the rv and it tracks correctly Just FYI- I’m 79 years old and using one floor jack, one bottle jack and hand wrenches I removed and replaced it by myself in a day (including breaks and naps) lol Very satisfied!