Tell me about sumo springs

I gather they replace factory bump stops? I'm going to be putting a allpro offroad bed rack and smittybilt rtt on soon. Will I need these with the extra weight of the tent, rack, and camping gear?

I've been looking for an economical solution for suspension droop with the added weight, these may be it. BTW, 2017 sport with bone stock suspension if it helps.

Whatcha got TW?

 

I just threw the 612-40s on my LB OR. I have bed mat, rebel canopy/topper, and 6 gallons of water. Definitely stiffened up the rear and makes it a bit more "Harsh" over bumps. I don't mind it and think I actually prefer it

 

I wouldn't say you "need them", but they're nice to have. I have the same set up on an access cab TRD OR with about #300 combined passenger weight and #500 gear/cargo weight. My truck sat level without the sumos, but would easily bottom out on the bump stops with little provocation.

 

Do they really help with sagging? I'm guessing I'l have at least 500 lbs additional weight in the bed when camping.

 

They do, it's money well spent in my opinion.

 

I had the older versions and got almost an inch of lift out of them.

 

DEAD LEVEL with cap, prinsu, awning, drawers and gear for four weighting ~800#s total

 

I have an interest as well, but I’m also wondering if an AAL would also be in order. Seems the Sumos help after the springs begin compressing, while an AAL allows more weight before the compression begins.

 

AALs don't add weight capacity, only lift. toyota springs suck. plus with an aal you will likely need a new longer shock as well

 

That was my fear. I"m planning a prarie dog hunt right now, and with the rack, RTT, ammo, fuel, blah blah blah, money is adding up fast. Buying a whole new suspension is out right now, sumo springs are cheap enough. Thanks a bunch for the help people.

Btw any recommendations on which one to go with, 500 lb or 1000 lb???

 

They really solved the sag in my 2007 while loaded with camping gear and the teardrop hitched. I assumed I would get a set for my 2016.

It doesn't sag with same load.

Get your RTT and all your junk and get your tape out. Don't fix it if it ain't broke.

SB

 

Thanks for the clarification.

 

500

 

They reduce your up travel in the rear. If you need rear flex then this might not be for you

 

i installed the timbren SES's on stock 4x4 off road suspension they touched the frame with no load so i added an aal and got an inch of space between the top of the ses's and the frame. so stock ride feel when unloaded and NO sag with full loaded bed. when you order any of the systems they ask if you have 3 or 4 leafs, i did not realize a 3 leaf will have 4 leafs( bottom most leaf is not a spring its a retaining bracket) so just be aware if your dumb like me. also did not need to change shocks and they work fine offroad albeit a little stiff when you bottom out at speed.

 

Well, after having them on for some time, I can say that I like them. If I were you, I would get them.

 

Yes, they replace rear factory stops. I have a lot of weight on the back of mine and tow often. They are the most cost effective solution to help suspension droop without anything else. I talk some on airbags vs sumos vs helper springs vs aal here: https://www.tacomaworld.com/threads/ga-tacoma-owners-bs-thread.17642/page-1168#post-23149668

Installing them - this is what full droop will look like with Dakar leafs, stock leafs it'll sit closer up. When the truck is on the ground and not flexed, my sumosprings sit snugly on the top cradle:



The installation is trivial if you're just adding Sumos, I could do it in my driveway in under an hour. I've done it before though, so if you're less mechanically inclined, maybe a few hours max. They're very easy to install.

This is misleading. You lose a bit of flex, but not enough to matter. You'll never notice unless you're rock crawling, and you don't rock crawl with a load enough to need Sumosprings.

2 stills from a video below, they show enough flex. It would flex more if I did one of those instragram-pose shots on a loading dock behind Starbucks. The key point here is Sumosprings won't hold you back offroading.






That said - and in defense of your point - here's a steep off-camber descent where I have less flex than a stock truck. It's exacerbated because there's no weight on the rear end. This was steep enough that my check oil light came on, so far from normal driving conditions. Again, good for overland, not good for rock crawling, but if you're rock crawling you should travel light and not need Sumos.

Mine have been great! No complaints whatsoever. I'd do airbags now since I have on-board air, but they're a really great low-tech solution to a saggy ride under load.

 

I would consider Timbren SES over the Sumo's...

 

Just got some sumos myself. Have not installed yet, but they are the 500lb blue 612s. Found them on Amazon warehouse for $100 figured they would be worth having with a cap and some weight. Have not towed with it yet, but have a pop up, utility trailer and a small boat it will pull. Might put them on soon.

 

Should be the same as 16, 17, 18, 19