I towed my trailer for the first time after installing Hellwig rear bar and Bilstein 5100's in the back

Night and day from no bar and stock shocks Sway was almost nil, trailer felt barely there. No wag, no bobbing up and down.

In fact I looked over at my wife to she what she thought, she said "what? It's the smoothest time towing she's ever felt"

Super happy I made the decision.

 

I would really like to know the terrain.
I routinely travel steep (8% grade) switchbacks and feel a lot of "push", even with E rated tires.

Thanks

 

We drove over a Cascade Mt Pass (Santiam, top elevation of 4817 ft) and has a curvy 11 mile 6% down grade if that helps.

Trailer is 35' tongue to bumper prob around 10k loaded