Sumo Springs

I'm outfitting my Tacoma mostly as a trip vehicle, which means it's going to be fairly loaded most of the time.

Currently I have:
OEM tonneau 80 lbs
KBVoodoo HI Rise rails 40 lbs
RTT 95 lbs
OEM Mat 27 lbs

So far with almost 250 lbs in the bed it sags a bit, it's basically level now. Usually I'll still have maybe 200-250 lbs of more camping gear/coolers in the bed which means it'll sag a bit more than I'd like.

I'm looking at getting some Sumo Springs, since I don't want to upgrade the suspension yet anyways. I can't decide between the two models though 612-40(500 lbs) or 612-47(1000 lbs). I do plan on doing some off-roading so I'd image the 40s would be a bit softer/nicer on rough stuff, but the 47s might hold the weight better.

Anyone have thoughts on this? There's been a lot of discussions around Sumos, mostly the older model. I haven't found much discussion between the two weights though.

 

i have literally the exact same setup - KBV's, OEM Tonneau, bed mat, with the exception of My RTT weighing in at #180. I put the 612-40's on mine. I was torn as well but chose the lighter ones because I don't store my tent on the truck, just mount it for camping. Mine loaded rides level. If you're looking to maintain some factory rake, I don't think either are going to achieve that as they are both the same height and it takes almost an inch of suspension compression before they come into play. Depending on how much extra weight you load in the bed, the 47's might be worth considering. But I think when you're driving around with above mentioned add-ons but empty bed, I'm guessing you'll notice it riding stiffer. Throw in a topper with an RTT, and I'd definitely go with the 47's. I'm happy I went with the 40's and I think you'll be happy with them as well. If you do buy them and then decide you want the 47's, I would think you'd have no trouble getting rid of the 40's in the classifieds.

By the way, I'm in an AC AT, so #140 lighter curb weight than your DCSB MT

 

Here is a pic of mine with no rack or tent, but does have the tonneau, bed mat, full tank of gas and 5 OEM wrangler tires (#190) in the bed, and is still maintaining a slight rake...

 

I've ordered a set of the 40's. I think it may be better to start with them and upgrade if need be. I won't always have the bed loaded with a couple hundred pounds of gear, so the 500 ones may be more flexible for me.

 

I asked sumo about this and copied their response below. I tow a bit, have a fiberglass topper, and sometimes carry a RTT on the topper. I'm planning on going with the 47 springs.

From sumo:
"Thank you for your entry.
For most cases I would recommend the 47 as it will provide for more muscle without compromising current ride quality.
If you don't believe you need the extra muscle because you are never loaded to much then the 500 is more than enough.
The SumoSprings have a progressive nature, this being said they get stronger with more load and are soft to compress when not under load.

If you order from our site you do have 30 days to try out our product if you wish to change to the lower/higher density, it is an easy switch.

I hope this helps.

Best Regards,
Andrew Kodama
805-745-5751"

 

I saw that exact message on a post here and definitely made me heavily consider the 47s. However i think lower weight springs are probably better as long as they meet your needs. If you start with 47s they will likely hold the weight fine, but you won't know if your ride quality is compromised a bit. If 40s don't hold the weight I'll upgrade, but at least I'll know I need to.

 

Yeah I'm sure I posted that somewhere else. The newer part numbers for the 3rd gens (612 instead of 610) were supposedly redesigned to not make contact with the frame until load is applied to the truck, but I'm not convinced that the ride won't be harsh.
Let us know how the 40s work for you!

 

I’ll jump in with my two cents. I have a 250lb fiberglass topper on my dclb 4x4. The 40’s made instant contact with the frame. Ride was fine on smooth roads but any quick jolts such as rough railroad tracks instantly transferred to a harsh bounce. I took them off.

 

What model are you running 610-40 (old), or 612-40 (new)? Trying to decide on 612-40, 0r 612-47 for mine.

 

612-40 or 610-40?

 

This was the 610-40

 

Ok, thanks. 612 series is shorter, changed for 16-18 model.

 

Most people with the old 610-40s seem to be happy with them. I'll keep you guys posted when I get the 612-40s.

 

Tundra sumos here.
Few hundred lbs of flooring in the bed plus 40+ base mouldings on the roof.
Still dead level.
Don't really feel them at all unloaded since I'm slightly lifted.

 

Even though I tried the 610-40’s I would be interested in the 612’s if the improvement is there.

 

Have run Timbrens in Tacos for 17 years and have no regrets.

 

I'm thinking I'm going to try a set of these. My camper is 325# dry. Add a 64lb battery, 40lb of LP, my paramotor and generator in the bed, a few other bits, a couple (empty) gas cans and jerry cans... I figure easily 5-600LB extra weight on the rear... but this will be very occasional.

The 610-40s still the best model for me?

 

I would say 612-47s but I have no experience with them yet.

Just ordered the 612-40s for a LB Rebel with bed mat and 5 gallon water reservoir in bed. Will report back

 

610 series are for 2nd Gen they are taller will contact frame, with no added weight. 612 series for 3rd Gen no contact when no added weight.

 

Thanks! My next trip towing the camper isn't for a couple months, so I've got time to make sure I get the right stuff!