a 21' trailer. Do I need air shocks? Trailer GVWR 6500 lbs. Dry wt 4494. I will be using a Hensley tow system. Do I need to beef up the rear of my Sequoia with air shocks?

I have a 2003 sr 5 v8 4.7 as well. I've been towing a proline 240 (center console ) for 7 years with the stock suspensions on it. is not a 4x4 either, so it slips a little taking it out of the water. I don't know the weight but is not light, and it works just fine for me. it doesn't bed down that much that you'll see any differences.

Been towing a 20 foot travel trailer, about 3500 loaded, for quite a while now with my 2008. I did not install air shocks like on my previous vehicles and find it rides quite well. Are you sure they make air ride shocks for the vehicle?