Anyone have experience with Hellwig 9706 Contact Helper Springs? ( or Hellwig 9703 used on previous generation trucks)
I think these look like a good option that can work with the factory overload springs.

My 2021 F350 with Camper Package handles very well with my 2,000lb (dry) slide-in camper, but I am looking to eliminate a couple of inches of sag at the rear.
I see a lot of positive comments about Hellwig's other helper springs for trucks that don't have the factory overload spring (LP-25/LP-35), but am not finding any testimonials for the 9706/9703's.

Also curious to hear any actual experience with the Hellwig 9706 or 9703 compared to SuperSprings SSA46 or SSA49 which also appear to be compatible with the camper package factory overload springs.

 

Does you truck already have factory helper leaf springs? Is your load already contacting the factory helper springs?

I have a 1700-2000 lb camper on my 22 F350 and I used torklift upper stable loads to engage the factory helper springs to minimize the sag. The ride is much improved. I had seen some info that the Hellwig helps once the load engages the helper. My issue with my camper is that is was heavy enough to sag the truck a couple inches but not heavy enough to engage the factory helpers the majority of the time. Engaging them from the get go made the ride much better. With only 2k in the truck I didnt necessarily need stiffer suspension, as it rides better loaded than empty, it just needed the factory helper springs engaged. I feel if I was hauling another 1000-1500 lbs in the bed of the truck it may benefit from the Hellwig springs but the truck is hauling less than 1/2 the rated payload capacity.

So while not directly answering your question of direct experience with that product it was a mental exercise that I went through last year.

 

A 2” sag is reported so commonly I am wondering if that is built into the design. Has anyone not seen a 2” sag before modding the suspension?

 

I am sure there is a bit of sag for the first couple inches in the design of the suspension. I would say that there is a large quantity of individuals that buy an F350 because they 'may' need the capability but really just drive around empty 97% of the time. They then complain about the harsh ride of their empty 1- ton truck enough that the manufacturer makes the suspension softer initially for unloaded riding but stiffen up (with the helper springs) once loaded. I think the issues many of us have is that with a load, before the helper springs, there is a sag that impacts stiff like headlight height, looks, etc. So we the 3% who use their trucks to haul campers have to find 'fixes' for the suspension. I am pretty sure Ford gets more sales for people who want to daily drive a big ol F350 than for people who haul truck campers.

 

I feel that the 2” sag that I have is totally acceptable and the our rig handles quite well with just the factory camper package. However because this truck has the camper in it 99% of the time and we are planning to use it for extensive travel over the next 10 years I’m exploring some of the simpler mods that might improve things further for its specific use.

 

Try the Torklift uppers first.

Easy to install or remove if not happy. I'm sure you could get most of your money back on ebay, if you buy them at the right price.