Solution for Sumo Springs Bucking

I have a 2013 Tacoma, 4d, Long Bed, 4x4, tow package. Truck has about 180,000 miles, everything is stock. My suspension isn't worn out in the sense that it bounces over speed bumps, but I know it's worn, I just don't have a means to replace it at the moment.
I bought blue Sumo Springs2 years ago primarily for a move across the country with very heavy trailer. They worked great for that, but I only tow about once per year at most. Everyday driving is rough. The rear rides rough and it bucks pretty hard. The blocks are about .25 gap away from the frame.
Option 1. Swap out for the factory bumps. I would have to buy some and tools and I don't have a great spot to work on my truck.
Option 2. Cut the sumos down further. My only concern is that it is still going to buck hard, just not as often, or just delayed
Option 3. I would like to find a bump stop that I can thread onto the Sumo Spring mount so that I can easily swap between bumps stops when I need to tow vs. everyday driving.
Would either of these options work?
- Icon Bump Stop
-Icon Universal Bump Stop

Thanks all for the help

 

I would just call Sumo and ask them. If that’s a dead end I would cut 1/2 “ @ a time. If that’s doesn’t work. Air bags. The only other choice is leaf springs.

 

Probably blown out strut, or leafs. I had same type of issues hitting potholes or bumps and rear slamming into stock bumpstop. Was both leafs and struts

 

Are your leaf springs “frowning”? Sounds like they are.

 

I have sumos and ran them with stock springs for awhile, OR TRD with 150K. Eventually the sumos harshness became more and more annoying as the rear springs wore out and sagged more, (the recall springs didn't last near the mileage OE springs did before they started sagging. I rate them no better them the ones toyota took off). Sumos will provide excellent load assistance but the closer the sumo gets to the stop the worse the ride will be. Right now the op has 1/4" of clearance so almost any bump is going to cause an impact that can be felt. Ideally the sumos only come into play when there's some decent weight in the bed but as the springs sag they come into play much more often. You can cut the top donut off the current sumos and gain about 1" of wiggle room and it will help but the issue won't have gone away completely. No tools required for that except a hacksaw.

I cut the top donut off my sumos and it was an improvement but it wasn't until I ditched the OE leafs before everything worked like it was supposed to.

 

Throw some weight in the back so the frame is starting to load the Sumo's and see if that gets you enought relief.

I run the mid-range black ones. I have a cap on the back for constant weight and it is decent and only gets better the more weight I am hauling in the bed.

 

I also had the same bucking happening with my Sumo's when my bed wasn't loaded. I ended up cutting mine down, so that at full bump my shock wasn't bottoming out. I had very little gap between the frame and Sumo before the cut and it wasn't allowing the shock to work as a shock. After the cut it worked much better.

 

All of you that are saying 'cut the Sumo' should get new springs. You shouldn't be 1/4" from your bumps. The stock springs suck and should be replaced by the time they get that bad...especially if doing any towing or heavy hauling.

 

Thanks for all the reply’s. I do know that my leafs are definitely worn out, they are flat or frowning. The struts aren’t bad, but I’m sure new ones would help too. I just can’t afford that at the moment. I did not get the sumos with the intention of them being a band aid but they have kind of turned into that. I reached out to Sumo and am waiting for a reply. Once they reply I’ll try to cut some more of it off. Anyone know how much I can cut off?
I only tow heavy once in a while.
I was also thinking of just putting some sandbags in the back to constantly load the sumos to make it smoother.

 

What leafs did ya go with? I plan on replacing mine with the General Spring’s Heavy Duty (90-297HD).

 

Those are the ones I got.