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gofastdan

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For reference I have a '24 Taco OR LB with a Lone Peak wedge camper, fully built out w/drawers. I've not been able to weigh the truck since completing the build but I estimate I'm right at ~1,000 lbs, all in. One of the first things I did when buying the truck was to install the Westcott Designs lift kit and I've been running that as I've added weight to the truck. I fully expected to need to reinforce the rear suspension and even before getting the truck I'd been trying to find someone making revised coils for the rear. Several manufacturers told me they were working on revised coils but they kept missing dates or, in the case of ARB, said they don't even expect to have a product until mid-2025.

At least in my case the Westcott kit didn't really "level" the truck. After installation with no weight the rear was ~1 1/2" higher than the front. As I added weight the rear dropped and with the completed build I dropped almost 3" in the rear, putting me maybe 1 1/2" off the stock bump stops, which I hit with every little bump.

Solution:
First, I installed the Timbren TORSEQ3. They come with two spacers you can add but even without any spacers the truck was sitting (barely) on the Timbren's 100% of the time and obviously they did nothing to restore the ride height.

Somehow through the magic of Google search I found Dobinsons and contacted them. Dobinsons makes many springs but doesn't have anything listed yet for the Tacoma but after going back and forth with them a bit they told me to order part C59-819V. This fits the LC300 and if you look at Dobinsons' site you can see there are multiple springs available, both for height and weight.

I ordered C59-819V and installed them yesterday. They're far taller and heavier than the stock coil. The stock springs have 6 coils (the way I count anyway) and the Dobinsons have 9. My biggest question going in was whether or not to reinstall the rear Westcott spacers. I decided to try w/o to start and that turned out to be the right call. Basically with the Dobinsons coils I'm sitting almost exactly where I was when I had just the Westcott spacers and no weight in the truck. I'm back to having the rear ~1 1/2" higher than the front. I also installed both spacers that came with the Timbren TORSEQ3 stops and still have almost 2" of air between the axle and the bump stops now. That's right at the limit of what Timbren recommends but I think it will be fine.

Installation of the springs wasn't that difficult but just know the springs are much longer than stock, and over and inch longer than the stock/Westcott spacer combo is. What that means is that you REALLY have to drop the axle to get the springs in there. The brake lines were my primary concern since the flexible hose between the frame and the axle isn't that long. I ended up removing all the bolts holding the steel lines to the axle (including the U clip on the caliper side) and that gave me plenty of drop.

Obviously I've only had the springs installed for a day and literally have driven less than 10 miles, and that on pavement, but at least on an initial drive I'm very happy. I did take a couple of speed bumps at a decent rate of speed and the truck felt great going over them.

The coils were $270, which I thought was a decent price, but shipping was expensive. If you buy directly from Dobinsons shipping is ~$60. I shopped around and ended up ordering from 4x4colorado.com because they advertise free shipping but after ordering I got a call from the owner and he let me know that Dobinsons had recently changed their pricing w/o letting him know and they were charging him the $60. We ended up splitting the cost and 4x4colorado didn't charge me Washington state sales tax so I was satisfied with the transaction. You might as well just build the shipping into the total cost though because it sounds like you're going to pay the cost regardless who you purchase from.

Here are some pictures. The before and after shots are a little misleading due to the angle of my driveway but you can get the idea.

Stock vs Dobinsons
2024 Tacoma Dobinsons Coil Spring Rear Suspension Upgrade (C59-819V) Installed on 2024 TRD Off-Road Longbed PXL_20240918_185031663

Before Dobinsons install
2024 Tacoma Dobinsons Coil Spring Rear Suspension Upgrade (C59-819V) Installed on 2024 TRD Off-Road Longbed PXL_20240918_174100802

After Dobinsons install
2024 Tacoma Dobinsons Coil Spring Rear Suspension Upgrade (C59-819V) Installed on 2024 TRD Off-Road Longbed PXL_20240918_221819653
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SP4RUNNER

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I had a question regarding your rock rails, what brand do you have on the truck? And is it supposed to be cut off from the back of the bed? I mean I would think it would protect the entire body from the front door to the rear quarter? Let me know because I have a 6' trail hunter coming in and im thinking about upgrading to a 20 degree slider , thanks
 
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gofastdan

gofastdan

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I had a question regarding your rock rails, what brand do you have on the truck? And is it supposed to be cut off from the back of the bed? I mean I would think it would protect the entire body from the front door to the rear quarter? Let me know because I have a 6' trail hunter coming in and im thinking about upgrading to a 20 degree slider , thanks
They're not sliders and I wouldn't use them as such. I have the Go Rhino Dominator Xtreme D6 side steps. They're plenty strong for standing on but they wouldn't even remotely hold the weight of the truck. I really like them though. They go to the rear of the cab and even though they're a universal fitment type of product the angles integrate well with the way the cab terminates.

They stick way out and from certain angles they might look a little goofy but they're great for standing on, they pretty much catch all the rocks being flung up from the front tires (I have yet to have any rock chips on the sides of the truck and I've driven plenty of gravel roads at speed), and an added bonus is that it's almost impossible to get door dings from other vehicles. Go Rhino has other options that are effectively the same but only four inches instead of six, but I'm happy with these.

Here's a few better pics.
2024 Tacoma Dobinsons Coil Spring Rear Suspension Upgrade (C59-819V) Installed on 2024 TRD Off-Road Longbed PXL_20240503_211339406
2024 Tacoma Dobinsons Coil Spring Rear Suspension Upgrade (C59-819V) Installed on 2024 TRD Off-Road Longbed PXL_20240624_001718006 (1)
2024 Tacoma Dobinsons Coil Spring Rear Suspension Upgrade (C59-819V) Installed on 2024 TRD Off-Road Longbed PXL_20240503_211149252
 

trailhunger

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looks good. Is your Timbren kit the camper version? I ordered a set today for my long bed TH for a GFC V2 Pro. I have about 6.75" clearance from frame to axle w/o load. Curious how these perform on washboard/pot-holed service roads. I know they'll make rock crawling extremely rough ride but for the first few years I'm mostly traveling far distances over mellower terrain vs moderate-to-heavy wheeling
 

Powhunter

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That looks great! Way to go out on limb, glad it worked out.
 

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gofastdan

gofastdan

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looks good. Is your Timbren kit the camper version? I ordered a set today for my long bed TH for a GFC V2 Pro. I have about 6.75" clearance from frame to axle w/o load. Curious how these perform on washboard/pot-holed service roads. I know they'll make rock crawling extremely rough ride but for the first few years I'm mostly traveling far distances over mellower terrain vs moderate-to-heavy wheeling
Sounds like we have similar goals. I don't intend on doing much rock crawling either. It's mainly for forest service roads, many of which are in bad shape here in the PNW.

Timbren was a bit confusing to me. They have three kits for the Tacoma, ABSTORTNDR which are geared toward off-roading, TORSEQ3 which is what I have and is their general purpose option, and TORTTNDR which is the camper option.

I went back and forth on all three and then reached out to Timbren for help. They weren't super helpful TBH but after a bit of an exchange I was told the TORTTNDR bump stops are really designed for heavy slide-in campers (severe service) and would be overkill for the weight I am carrying. They recommended the TORSEQ3 and so far I'm happy with the option although, like I said, I really haven't had an opportunity to pound on them yet. That will come in the next few weeks though! Ultimately though I'm still not sure that any of the options would work just fine...
 

2ndGen2TrlHntr

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Very glad you posted it, thanks! I called them a couple hours ago and got a bit more intel. So the path the gentleman I spoke to said to take is listed and linked below.

- From Dobinson's USA main page choose Toyota, Tacoma 4th Gen, year 24/25, then full suspension kits. The reason for this path is it shows the part numbers same as the LC300 but with the Tacoma specific load ratings. Screen shot below.

Dobinson's USA direct link

2024 Tacoma Dobinsons Coil Spring Rear Suspension Upgrade (C59-819V) Installed on 2024 TRD Off-Road Longbed 1726786343817-6t
 

Mrknowitall

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Congrats on locating useful springs. And on a great looking build.
Tundra guys have been using LC300 springs, too, so it would stand to reason that Tundra coils fit the Tacoma as well.
 
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gofastdan

gofastdan

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Very glad you posted it, thanks! I called them a couple hours ago and got a bit more intel. So the path the gentleman I spoke to said to take is listed and linked below.

- From Dobinson's USA main page choose Toyota, Tacoma 4th Gen, year 24/25, then full suspension kits. The reason for this path is it shows the part numbers same as the LC300 but with the Tacoma specific load ratings. Screen shot below.

Dobinson's USA direct link

1726786343817-6t.jpg
Nice. They didn't mention this page to me and I could only find the page for the LC300. It's probably for the best though because based on this I would probably have ordered the C59-821V instead of the 819V, but I think the 819V is a good fit. Just based on my limited driving so far I don't think I'd want the coils to be any stouter.
 

gumbo

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Thanks for these details! Getting my LP on October 11th and will be looking to do some reinforced coils as well. What did you use to lift your truck high enough to install these?
 

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gofastdan

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Thanks for these details! Getting my LP on October 11th and will be looking to do some reinforced coils as well. What did you use to lift your truck high enough to install these?
That wasn't really an issue. I just used my normal jack stands. I had two pump jacks, one under each side of the axle and once you take the wheels off and get enough brake lines and whatnot free, you can actually drop the axle quite a ways.

Looks like you're in the Seattle area. I live in Monroe. If you're close and want help once you're ready just let me know and I'd be happy to give you a hand (although I'm taking a road trip to Arizona and am planning to be gone most of October...).
 

2ndGen2TrlHntr

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I ordered the springs listed yesterday from my local shop that's doing a couple things for me on my TH. I took measurements of the space between my tire and the first contact point inside the wheel well after the LP was installed (forgot to do it stock). Next is my drawers & camp kitchen, then the fridge, electrical, etc. I will post the before and after measurements and pics so you can all see the impact heavy duty springs has on a heavy build out. Right now I'm sitting at 5.5" between the tire and wheel well. I am sure that I'm sitting at least 2 - 3 inches lower just from the LP. I will have close to 1000 pounds loaded out I"m sure so I want with the heavier duty one. It's a 1.25" lift, which I believe would be the lift of a non TH or Pro. The TH I think is a 1.5" lift from the factory so theoureti

  • C59-821V (30mm - 1.25") 880-1210lb Load
 

gumbo

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That wasn't really an issue. I just used my normal jack stands. I had two pump jacks, one under each side of the axle and once you take the wheels off and get enough brake lines and whatnot free, you can actually drop the axle quite a ways.

Looks like you're in the Seattle area. I live in Monroe. If you're close and want help once you're ready just let me know and I'd be happy to give you a hand (although I'm taking a road trip to Arizona and am planning to be gone most of October...).
Awesome, thanks for the offer! Will hit you up once I pull the trigger. I'm in North Seattle.
 

elturco

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Hi guys, can any of you that have the spring coils installed provide an update? How is the ride quality? Also, any of you considering extending the break lines?
 
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gofastdan

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Hi guys, can any of you that have the spring coils installed provide an update? How is the ride quality? Also, any of you considering extending the break lines?
I've had them on for several hundred miles now (the 819V variant) and have no complaints. I've done limited dirt roads and no real off-roading so factor that in but on-road the truck handles well. I still think the rear end floats a bit more over whoops than the stock suspension but I feel that's more the weight I'm carrying on the back and the fact that I've kept the stock OR Bilstein shocks than it being due to the springs. The springs are doing their job and I haven't felt the rear end either bottom out or top out. That said, I'm taking off next Monday morning for a ~3,000 mile trip that will have a good mixture of all types of surfaces so I should have a really good idea of how it's all working together by the time I get back. I don't expect any drama though.

As for the brake lines, I don't see them needing to be extended. Yes, the springs are quite a bit taller than the stock springs, but the whole point is that with the extra weight the truck is sitting not that much different than stock. I had the Westcott Designs spacer lift on front and back, the back puck being .75 in, and after the spring install with no puck I'm sitting almost at exactly the same height as I was with the puck on the stock springs and no weight.

I've kind of said this already but IMHO the only thing that may need changed down the road would be the shocks. At the current height they're well within their operational limits as far as extension and compression goes but they're being asked to dampen a lot more weight than they would in an unloaded truck, which is why I'm getting that bit of float. It's taking the shocks a bit more time to dampen the spring movement than if there were no weight to contend with. Again, it's not bad but I kind of expect it to accelerate the wear on the shocks and I'm guessing I'll need to replace them at some point. That could be 100k - 200k from now though and I'm not going to worry about it until they wear out unless things get interesting on this trip (which, again, I'm not expecting).
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