Dobinsons Coil Spring Rear Suspension Upgrade (C59-819V) Installed on 2024 TRD Off-Road Longbed

[MtnToad]

Thank you so much for the update. 23 3/4 seems to be right around the sweet spot I think I will be around 600 pounds too.

Did you lift the front?

No, I left the front stock. I just couldn’t justify spending $1200 to lift the front on a truck w 600mi with how I use it lol. Though I did find the height of the 819’s to be nearly perfect but was way too much rake with the front stock

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[RESQCAT]

2024 Toyota Tacoma Trailhunter Suspension Mods

After researching, reading forum, and consulting with Mule Expedition Outfitters, here is my current solution for offsetting the increased weight of my truck. I previously posted a detailed list with weights for specific items kept onboard the truck.

FRONT: Bumper, Winch, Lights 235 lbs Front
REAR: Leitner ACS Forged Rack, Rescue & Personal Gear, Decked Drawer, CargoGlide 760 lbs Rear

TOTAL APPROX. LOADOUT = 995 lbs

SOLUTION:
Installed Dobinson's Springs - RIDES SMOOTHER, SEEMS AT LEVEL (Not yet measured)

• Front Coil Spring Specs: Front offset needed approx. +235lbs
  • C59-822 (50mm- 2") 110-220lb Load
• Rear Coil Spring Specs: Rear offset needed approx. +709lbs
  • C59-819V (30mm - 1.25") 440-660lb Load

If more is needed I can go to the 821s in rear or add a spacer to front or back. No real need or desire to replace my suspension or lift the truck more for my use case.

Tires are Cooper 265/70R18 Snowclaws on OEM wheels for winter, Falken 285/70R17 AT4Ws on 17 inch Method 703s for most of the year.

Will see how this works out. Still have less than 900 miles on my Trailhunter.

 

[gofastdan]

2024 Toyota Tacoma Trailhunter Suspension Mods

After researching, reading forum, and consulting with Mule Expedition Outfitters, here is my current solution for offsetting the increased weight of my truck. I previously posted a detailed list with weights for specific items kept onboard the truck.

FRONT: Bumper, Winch, Lights 235 lbs Front
REAR: Leitner ACS Forged Rack, Rescue & Personal Gear, Decked Drawer, CargoGlide 760 lbs Rear

TOTAL APPROX. LOADOUT = 995 lbs

SOLUTION:
Installed Dobinson's Springs - RIDES SMOOTHER, SEEMS AT LEVEL (Not yet measured)

• Front Coil Spring Specs: Front offset needed approx. +235lbs
  • C59-822 (50mm- 2") 110-220lb Load
• Rear Coil Spring Specs: Rear offset needed approx. +709lbs
  • C59-819V (30mm - 1.25") 440-660lb Load

If more is needed I can go to the 821s in rear or add a spacer to front or back. No real need or desire to replace my suspension or lift the truck more for my use case.

Tires are Cooper 265/70R18 Snowclaws on OEM wheels for winter, Falken 285/70R17 AT4Ws on 17 inch Method 703s for most of the year.

Will see how this works out. Still have less than 900 miles on my Trailhunter.

Thanks for posting. I currently have a Westcott spacer on the front but I ordered a bumper today, CBI Super Stock Covert, which was the most minimalist bumper I could find that would fit a winch. I picked up a Harbor Freight Badlands 12k winch last week for a great price.

It will be a couple of months before I get the bumper but I'm guessing once I get it all together I'll end up pulling the spacer out and go with the same springs in front. It's good to know you're happy with them!

 

[RESQCAT]

You are welcome. Remember, I do not have miles on this yet... but I am pretty confident I am in the ballpark. Back in the day when I was building Fast Attack Vehicles for 2/1 Infantry, I had to do weight calcs for each version of a dune buggy for lift purposes (Blackhawk, CH-47). I like to think I got pretty good at estimating what things weighed... and used that lesson here. It is never an exact science, but you can dial things in well over time.

 

[elturco]

2024 Toyota Tacoma Trailhunter Suspension Mods

After researching, reading forum, and consulting with Mule Expedition Outfitters, here is my current solution for offsetting the increased weight of my truck. I previously posted a detailed list with weights for specific items kept onboard the truck.

FRONT: Bumper, Winch, Lights 235 lbs Front
REAR: Leitner ACS Forged Rack, Rescue & Personal Gear, Decked Drawer, CargoGlide 760 lbs Rear

TOTAL APPROX. LOADOUT = 995 lbs

SOLUTION:
Installed Dobinson's Springs - RIDES SMOOTHER, SEEMS AT LEVEL (Not yet measured)

• Front Coil Spring Specs: Front offset needed approx. +235lbs
  • C59-822 (50mm- 2") 110-220lb Load
• Rear Coil Spring Specs: Rear offset needed approx. +709lbs
  • C59-819V (30mm - 1.25") 440-660lb Load

If more is needed I can go to the 821s in rear or add a spacer to front or back. No real need or desire to replace my suspension or lift the truck more for my use case.

Tires are Cooper 265/70R18 Snowclaws on OEM wheels for winter, Falken 285/70R17 AT4Ws on 17 inch Method 703s for most of the year.

Will see how this works out. Still have less than 900 miles on my Trailhunter.

This looks pretty awesome. Just for my understanding, the C59-822 coils fit the stock shocks?

Also, when you can, please share your measurements.

I bought the 819s but I am now looking at what to use to lift the front and a coil lift would be better than a spacer lift and I am wondering if I can replace the front springs of my TRD Off Road. I know the shocks are different than your THs.

 

[RESQCAT]

Call Dobinsons and talk to them directly. Those springs are a confirmed fit for my Trailhunter and my local 4WD shop put them on after also verifying fitment for the 24 Tacoma. They installed without a problem.

I called Dobinsons before ordering after reading about the shocks on the Forum. I do not know about any setup other than the Trailhunter which came with the Old Man Emu 2 in lift in front and 1.5 in the rear. What I was after was offsetting the weight of my truck with my equipment added.

 

[andrewleader]

Just installed 819's installed on Tacoma Off Road 5' bed with ~850 lbs of constant load... Wanted to share my stats for those deciding between springs. I have a Tune truck camper with a kitchen setup in the rear, approx 800-850 lbs of constant weight (the Tune was weighed at 500 lbs on CAT scale, haven't measured my build yet but I've estimated those weights).

	Stock rear springs	819 rear springs
+0 lb load	37.75"
+850 lb load	35.75" (-2" below stock)	38.75" (+1" above stock)

My measurements were taken from the center of the rear tire hub to the start of the rear tire fender while at the same parking lot next to a stock Off Road 5' bed truck at the dealer.

Front is sitting 0.5" lower than stock.

I've aggregated some other numbers from others earlier in this thread, and converted my measurements to the normalized format from the center of the rear tire hub to the start of the rear tire fender...

	Stock rear springs	817 rear springs	819 rear springs
0 lb load	+0 above stock (23.25")
50-100 lb load		+2.25" above stock (MFR)
175-330 lb load		+1.25" above stock (MFR)	+2.25" above stock (MFR)
500 lb load		+0.5" above stock (23.75") (MtnToad)
440-660 lb load			+1.25" above stock (MFR)
785 lb load			+1.25" above stock (24.5") (MtnToad)
850 lb load	-2" below stock (21.25")		+1" above stock (24.25")

 

[tacorancher]

Driveway is with the bed relatively empty and desert shot is near my normal. The 817’s seemed to be the ticket for me.

Falken AT3?

 

[MtnToad]

Falken AT3?

At4w

 

[Tacoyaki]

I have a Tune on a 6ft bed. Weighed in at 600 lbs in scale. I built my kitchen setup, but tried to keep it lightweight. With all the other stuff/gear and water, I estimate I'm ~1000 lbs constant weight, not including passengers.

Based on aggregated data so far, seems like I'd be close to stock height with the 819 springs?

 

[elturco]

it seems like you would be a bit less than 1 inch from stock.... I installed the 819s on my truck with about 350 constant weight and my rear is about 25.25 or 2 inches from stock. The 819 would be a bit less at around 24 with the 1000 lbs of extra weight.

You should call Dobinson to get their input.

If you decide to go for 821s, let me know I have a pair for sale. I had to uninstall them cause I only have 350 lbs of constant weight and Dobinson told me those are for 1000 lbs.

 

[Tacoyaki]

Just measured my rear and I'm at 20.25" (and my water tank is mostly empty right now). I'll give Dobinsons a call.

How much are you asking for your 821s?

 

[gofastdan]

Just measured my rear and I'm at 20.25" (and my water tank is mostly empty right now). I'll give Dobinsons a call.

How much are you asking for your 821s?

I'd be leery about going with the 821's unless you're going to raise the front as well. For sure call Dobinsons but they seem to always lean toward the bigger spring. I'm not certain they're not still going off the measurements of the LC 200/300, which is a heavier vehicle to start with. I have the 819's and even fully loaded (close to or maybe even over 1,000 lbs) I'm still over stock height. I have a spacer on the front though and I'm perfectly happy with them.

 

[elturco]

I am asking 80 for the 821s.

With the 821s, my 350 lbs of weight on my bed, I was about 25.50 inches, with 600 lbs I was about 25.25.

The issue with the 819s and 1000 lbs of weight, as it was explained to me is that you already had used most of the spring travel and you would had been fully compress. With the 821s you would still have spring left to not stress your truck as much and still retain spring to soften the ride and allow for the suspension to help your truck with the weight. Funny thing for me, having had both the 821s and 819s on my truck is that my rear sits at around 25.25 with the 819s and 25.50 with the 821s. Not much of a difference but if I add another 300+ pounds, the 819s do go down about 1 more inch. I only imagine that the 821s also go down but a bit less. If I had more weight on the back, 1000+ I would had chosen the 821s. The ride is smooth with both and I do not noticed a difference that I can note.

If you want a spring rated for the weight you carry but with a lower lift, I would look at other options (not the Dobinsons 817,819 nor 821) to achieve this correctly.

In my case, I was fighting the need for a front lift but realized that 1.5 inch lift would be ideal and 2 inch would be my max limit. Ideal to help with approach and departure angles. I could not find a 1.5 lift for the front so I am getting a 2 inch lift (peak suspension) to be installed next week.

So, if you look at the 819 vs 821, you would end up slightly lower on the 819s than the 821s because your springs would be fully compressed but not much lower than the 821s, maybe about .5 of an inch with the weight you are carrying.

I think that we upgrade the springs to help with 2 issues. 1) Get the rear up after adding the extra weight and 2) Help the truck carry the weight. Each of us, would need to find a balance with our priorities.


819s - Toyota Tacoma 2024 On - (55mm - 2.25") 175- 330lb Load / (30mm - 1.25") 440-660lb Load

vs

821 - Toyota Tacoma 2024 on - (55mm - 2.25") 440-660lb Load / (30mm - 1.25") 880-1210lb Load

 

[gofastdan]

I am asking 80 for the 821s.

With the 821s, my 350 lbs of weight on my bed, I was about 25.50 inches, with 600 lbs I was about 25.25.

The issue with the 819s and 1000 lbs of weight, as it was explained to me is that you already had used most of the spring travel and you would had been fully compress. With the 821s you would still have spring left to not stress your truck as much and still retain spring to soften the ride and allow for the suspension to help your truck with the weight. Funny thing for me, having had both the 821s and 819s on my truck is that my rear sits at around 25.25 with the 819s and 25.50 with the 821s. Not much of a difference but if I add another 300+ pounds, the 819s do go down about 1 more inch. I only imagine that the 821s also go down but a bit less. If I had more weight on the back, 1000+ I would had chosen the 821s. The ride is smooth with both and I do not noticed a difference that I can note.

If you want a spring rated for the weight you carry but with a lower lift, I would look at other options (not the Dobinsons 817,819 nor 821) to achieve this correctly.

In my case, I was fighting the need for a front lift but realized that 1.5 inch lift would be ideal and 2 inch would be my max limit. Ideal to help with approach and departure angles. I could not find a 1.5 lift for the front so I am getting a 2 inch lift (peak suspension) to be installed next week.

So, if you look at the 819 vs 821, you would end up slightly lower on the 819s than the 821s because your springs would be fully compressed but not much lower than the 821s, maybe about .5 of an inch with the weight you are carrying.

I think that we upgrade the springs to help with 2 issues. 1) Get the rear up after adding the extra weight and 2) Help the truck carry the weight. Each of us, would need to find a balance with our priorities.


819s - Toyota Tacoma 2024 On - (55mm - 2.25") 175- 330lb Load / (30mm - 1.25") 440-660lb Load

vs

821 - Toyota Tacoma 2024 on - (55mm - 2.25") 440-660lb Load / (30mm - 1.25") 880-1210lb Load

Nice recap!

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