Saggy rear-end

Hi Guys-
Looking for some advice-
2018 5th gen stock here except for the KO2's. My girl has a saggy ass because
Ive got an Alu-cab rooftop tent, awning and shower cube installed. Couple hundred pounds up top and will be looking to add goose gear equipment for the rear. All of this while touring out west. Currently, the rear-end has a slight sag with all the extra weight up top.
Looking for advice about how to move forward.
Do I just need overlanding rear-end springs? Higher suspension lift? Both? Again, I'll have more weight coming in rear and will be doing off-road stuff in southwest US (Utah, Arizona etc.)

Thoughts?
Thanks!!!!!

 

Would a rear spacer be a good temporary/cheap fix until you decide to do a full suspension upgrade? Might get you by if you’re not hardcore off road.

 

Definitely will want a heavier rate spring, but I would suggest getting all your upgrades installed before looking into the correct spring. Shocks should also be addressed at the same time. This will help with handling and help prevent the vehicle from bottoming out.

 

Ask any trainer and they will recommend squats to remedy a saggy rear-end!

 

As mentioned, heavier springs will help. You could also consider air-bags if you just want to maintain stock height.

 

I have the same amount of weight as you do on my 4. Upgraded the suspension before adding the weight due to handling concerns with the stock suspension with just a little weight in it. IMO the stock suspension starts to go bad after 30,000 miles. Toyota skimps on their suspensions. Anyway, here is what I added and there are no issues whatsoever after this.

It was about as cheap as I could go and still have a high quality suspension that was going to last and be adequate for the amount of weight the 4 carries on a daily basis. Are there better setups out there? Definitely, I'm sure, but I didn't want to blow out the budget and I wanted as low maintenance as possible. Didn't want to have to rebuild suspension components regularly.

Eibach PRO front coilovers
OME 8295 rear springs
JBA UCA's
trim packer type spacers on the drivers side front and rear
Durobump bump stops

I got all this through Wheelers Off Road except for the upper control arms which were bought directly from JBA. The people at Wheelers also assembled the front coilovers, for a fee of course, so everything was bolt on when it arrived.

Wheelers is very helpful and I settled on this setup from their recommendations after discussing with them what I was going to carry on the 4 daily and how I was going to use it, towing, carrying dirt bikes, etc....Also took advantage of a little sale they had going on at the time and all this cost me around $1600.

It rides like a truck, which I like. It is solid and planted. In the corners...probably equivalent to KDSS type handling (I don't have KDSS). Yet off road it is compliant. Even with all the weight my 4 still has some rake to it. When I throw the 300 pound dual sport on the hitch rack the 4 rides about level. Needless to say I am very happy with this setup.