Heavier-Duty Replacement Pin Box For 2013 keystone Alpine 3535e Fifth Wheel Trailer

Question:

Hi, I have a freightliner semi which Im going to pull a 2013 keystone alpine 3535re fifth wheel camper and I was wondering what flex air pin box you think is right for me. I would like to put a little heavier pin box on than I need, there is a 16,000 pound trail air on it now, thanks

asked by: Dale

Expert Reply:

We do offer several pin boxes that have more weight capacity than the 16,000-lb you said you have on your Keystone.

The first thing we need to know is what model pin box will fit your trailer. Since you said you have a Trailair installed, you can let me know what model it is and I will be happy to find a replacement that has more capacity. That way we will match the mounting bolt pattern for your trailer. Most of the time it is found on the driver side of the pin box on a plate or sticker.

I have attached links to our product pages for the pin boxes we offer that have an 18,000-lb or 21,000-lb capacity. I have also attached a link to a helpful article that has a chart which lists the replacement pin boxes.

expert reply by: Jeffrey L