Dobinsons rear long travel variable rate flexi coils

[Crikeymike]

Here's a post exclusively for the Dobinsons rear long travel coil options for the 5th Gens, which can also work on the 4th Gen's too. The C59-675V is 1/2" shorter on a 4th Gen.

All coils are made in the classic Dobinsons teal color, black and red, subject to stock availability of course.

C59-675V - Variable rate comfort option, stock rear weight, 3" lift. 470/470mm open, 16mm wire, 157-230LB variable
Depending on whether you have a 3rd row seat or any additional weight, these coils will be at 3" lift height with no rear weight. These can be run without long travel shocks if you aren't going for max flex but want to have great load support when adding camping gear or whatever other weight you carry around. You will need extended length shocks though to make sure that they don't top out too easily at this lift height.


C59-677V - Variable rate comfort option, 400+LB heavy rear load weight, 3" lift. 500/500mm open, 16mm wire, 157-230LB variable
These are the next step up with another coil wind added to give extra load support. Recommended to have at least 300-400LBS of extra weight on the vehicle at all times so that these perform properly and don't over lift. Due to their long free height length (19.7"), you'll have to remove upper and lower control arms and panhard rod most likely to get them installed, and long travel shocks will be needed to get the most travel out of them.


C59-701V - Variable rate, 600+ LB heavy rear load weight, 3" lift, long travel. 500/500mm open, 210-245LB variable.
Designed for those with heavy full rear bumper, tire carrier, roof rack, RTT, drawers, and fridge. Rides very well with all that weight, as well as when loaded even further. This is pretty much the heaviest flexi coil we can make while still supporting all that weight and giving maximum flex/travel.

C59-749V - Variable Rate, 800-1000 LB super heavy constant rear load, 3" lift, long travel. 520/520mm free height, 18mm wire, 198-300LB variable rate, usually around 270LB at loaded height


C59-849V - 3" Lift with a minimum of 1000LBS of added rear constant weight, 500mm free height, 19mm wire, variable rate 314-371 LBF/in at ride height/loaded, can be used with long travel shocks

Rear Bump Stops
HBS59-010FK - Complete Hydro Bump Stop Kit to replace the factory coil isolator and internal bump stop, CNC Machined 50mm Billet Aluminum Piston, EDP Coated 3mm Thick 56mm Steel Body

Hopefully everyone that is already running these coils will chime in and give their feedback. The weight selection can be tricky, especially since most people don't want to lift the rear ends too much, but without getting the load ratings correct and truly knowing how much weight you've added to your vehicle, you may end up with not enough or too much lift.

And here's my thread with every option front and rear that we offer including the shocks, front coils, and all of the linear coils for those not looking for anything too crazy. Dobinsons 5th Gen T4R Suspension options - lots of choices - Toyota 4Runner Forum - Largest 4Runner Forum

Here are some photos of the coils in action from various customers:

 

[I35it]

I see someone has an upgraded panhard rod, is that recommended with the lift?

 

[Crikeymike]

I see someone has an upgraded panhard rod, is that recommended with the lift?

We also sell those too, part number PR59-1423. It's not required though. It would be recommended if your axle becomes off-center from the lift added to it.

For a "proper" rear long travel lift, here's a list of items that you would need.
Long travel coils
Long travel shocks
3" extended bump stop spacers (may vary due to shock length)
Extended brake lines
Panhard rod, depending on lift height
Adjustable rear UCA's to correct pinion angle, depending again on lift height
LCA's with better flex angles so they don't bind on full down travel.


There are several brand options for the arms, panhards, bump stops and all those parts. One of the biggest limitors of down travel is that the rear UCA can hit the fuel tank on full down travel, so you've got to be careful there too. Keeping stock arms in there will bind up before that hits.

 

[chmura]

4th gens are heavier in the rear? That is surprising should be same or less. The 5th gen weighs ~200 lbs more than the 4th gen 4runner.

I'm in the market for a rear coil for my 2009 4runner. Getting a rear bumper soon.

 

[wfo9]

Nice to see more options for this...What is the free length of your coils?

And full and compressed length of your LT shocks?

A real boon for rear LT would be a hydro bump kit of some sort... The 3" extension obviously creates some issues at speed in extreme terrain. Maybe even softer than stock bumps with some adjust-ability to dial it in...

 

[Crikeymike]

4th gens are heavier in the rear? That is surprising should be same or less. The 5th gen weighs ~200 lbs more than the 4th gen 4runner.

Yeah, I've heard the same thing. The weight difference must be more towards the front.

The C59-675V gives between 2.25 to 2.5" of lift on a stock weight 4th Gen, but it's a solid 3" on a 5th Gen. We have a 5th Gen here that we checked all these on, and we had a customer recently put them on a 4th Gen and a GX470, and both were at about 2.25" of lift.

The C59-325 coils are also about 1/4 to 1/2" less lift on a 4th Gen

 

[Crikeymike]

Nice to see more options for this...What is the free length of your coils?

And full and compressed length of your LT shocks?

A real boon for rear LT would be a hydro bump kit of some sort... The 3" extension obviously creates some issues at speed in extreme terrain. Maybe even softer than stock bumps with some adjust-ability to dial it in...

The coil specs are up above.

Rear LT shocks:
GS59-575 - Twin Tube, Long Travel, suits 3" lift (3" bump stop spacers recommended so shocks don't bottom out). 730mm extended, 425mm compressed.


Hydro bumps would be an awesome idea on these.

 

[Crikeymike]

Bringing this thread back to life, just updated post #1 with the latest and strongest 4th rear 3" long travel option, the C59-749V, and also have this photo of each coil side by side.

They're sitting upside down of course, but you can see the difference between them.

Don't forget, they're offered in teal, black or red powder coat with no additional price difference between the colors.

C59-675V - Dobinsons C59-675V Rear Variable Rate Long Travel Coil Springs for 4Runner, FJ Cruiser, GX470, GX460
C59-677V - Dobinsons C59-677V Rear Variable Rate Long Travel Coil Springs for 4Runner, FJ Cruiser, GX470, GX460
C59-701V - Dobinsons C59-701V Rear UHD Long Travel Coil Springs for 4Runner, FJ Cruiser, GX470, GX460
C59-749V - Dobinsons C59-749V Rear Extremely HD Long Travel Coil Springs for 4Runner, FJ Cruiser, GX470, GX460

 

[Crikeymike]

I don't normally do a comparison post among other brands, but it does come up all the time, so I figure I'll write down what I know, and if you've changed from a different brand over to Dobinsons, please write your summary of what you had and what you changed to.

The C59-675V I believe are closest to the Toytec Superflex rear coils (not HD), although I think the lift heights are different.

Icon overland rear springs are equivalent to the C59-677V from what everyone has told me. Had one guy last year buy the 677V's without assistance to replace his Icon's and ended up with exactly the same lift and a fraction more firmness, but not what he wanted.

The C59-701V is a step up over the Icon Overland 3" rear springs. The guy that had the 677V's and Icon's before that is running these and loves them.

The C59-749V are stronger than anyone else on the market offers, haven't seen anything close to those as of yet. You cannot run these if you are not running the weight listed. They are quite a chore to install due to their free height and spring rate.

And OME doesn't make any rear 3" springs, let alone any long travel variable rate options for the 4th/5th gen platform. People have been sold strong rated 2" springs, that on an empty vehicle end up yielding 3" of lift or so, but they ride horrible. I've had friends with that setup and it was virtually unbearable. For example, a 2" coil listed for 400KG constant rear weight gives ~3" of lift on an empty truck, but with a 280LB spring rate or something horrible, it's just not ideal.

 

[PAKM4N]

I don't normally do a comparison post among other brands, but it does come up all the time, so I figure I'll write down what I know, and if you've changed from a different brand over to Dobinsons, please write your summary of what you had and what you changed to.

The C59-675V I believe are closest to the Toytec Superflex rear coils (not HD), although I think the lift heights are different.

Icon overland rear springs are equivalent to the C59-677V from what everyone has told me. Had one guy last year buy the 677V's without assistance to replace his Icon's and ended up with exactly the same lift and a fraction more firmness, but not what he wanted.

The C59-701V is a step up over the Icon Overland 3" rear springs. The guy that had the 677V's and Icon's before that is running these and loves them.

The C59-749V are stronger than anyone else on the market offers, haven't seen anything close to those as of yet. You cannot run these if you are not running the weight listed. They are quite a chore to install due to their free height and spring rate.

And OME doesn't make any rear 3" springs, let alone any long travel variable rate options for the 4th/5th gen platform. People have been sold strong rated 2" springs, that on an empty vehicle end up yielding 3" of lift or so, but they ride horrible. I've had friends with that setup and it was virtually unbearable. For example, a 2" coil listed for 400KG constant rear weight gives ~3" of lift on an empty truck, but with a 280LB spring rate or something horrible, it's just not ideal.

Hi Mike

Do you recommend 701v for KDSS?

 

[Brownfaux]

I hadn’t looked into Dobinsons products until just now.

I had a Toytec Ultimate on my 4th gen, and ran OME in my 100 series.

Im liking the extended travel of these coils and considering going this route.

As much as I’d love some remote reservoirs with adjustment valves, I don’t think my use of them will be to their full potential.

Edit— looking at your pricing, I could get into a set with adjustment fairly easily...




Sent from my iPhone using Tapatalk

 

[Crikeymike]

I hadn’t looked into Dobinsons products until just now.

I had a Toytec Ultimate on my 4th gen, and ran OME in my 100 series.

Im liking the extended travel of these coils and considering going this route.

As much as I’d love some remote reservoirs with adjustment valves, I don’t think my use of them will be to their full potential.

Edit— looking at your pricing, I could get into a set with adjustment fairly easily...




Sent from my iPhone using Tapatalk

Thanks man. Yeah, pretty competitive pricing on the new adjustable struts and shocks that are just now coming out. But you're also right, if you don't feel you will need that level of adjustment, you could go with the standard twin tubes and upgrade some other items too.

 

[Crikeymike]

Hi Mike

Do you recommend 701v for KDSS?

Usually not. You're pushing it to the max with that kind of lift height, and since KDSS is limited in the rear by shock length, you wouldn't be able to have much down travel left at all.

The piston side of the sway bar contacts the panhard rod just after full extension of the Dobinsons GS59-701 rear shocks, so that's the limiting factor.

Also, I've found that over 2.5" of rear lift, the KDSS system produces a lean that can be really hard to balance out, if at all.

That said, some guys with KDSS are running some of the 3" Dobinsons rear coils. Maybe they'll chime in here with their thoughts on it, and their combination of parts too.

 

[comtn4x4]

Hi Mike

Do you recommend 701v for KDSS?

I run the 701v's and I've run the 677v also on my KDSS equiped rig. I think they're fantastic coils. Being a variable helps immensely with the difference between fully loaded and unloaded performance/comfort. Where the coils really shine for me is handling fully loaded like a champ. (I generally add 750 lbs or more in people, dogs, supplies and equipment to my already heavy rig) I have not had any issues with my KDSS although I only average 2.5" lift currently, I also have Sonorran Steel's KDSS sway bar and their specialized KDSS Radflo struts. (FWIW in 7 years I've never had the dreaded KDSS lean for whatever reason.)
As a general statement I would recommend Dobinson's variable rate coils. The caveat being you really need to be in the weight ranges [MENTION=148378]Crikeymike[/MENTION] has listed for each coil. If not you're going to get too much lift and it will ride like hell and most likely cause problems with your KDSS. From your signature I would say that you aren't carrying enough weight to run the 701V but I can't be sure. The question I would probably ask myself first is do I really need 3" lift in the back? Especially considering that lifting less in front is preferable from a performance standpoint and thereby you can probably get away with less rear lift. I maintain approximately the stock rake so that when I load up it ends up level.
I'd get with [MENTION=148378]Crikeymike[/MENTION] and detail your setup and see what he says.

Best of luck

 

[PAKM4N]

I run the 701v's and I've run the 677v also on my KDSS equiped rig. I think they're fantastic coils. Being a variable helps immensely with the difference between fully loaded and unloaded performance/comfort. Where the coils really shine for me is handling fully loaded like a champ. (I generally add 750 lbs or more in people, dogs, supplies and equipment to my already heavy rig) I have not had any issues with my KDSS although I only average 2.5" lift currently, I also have Sonorran Steel's KDSS sway bar and their specialized KDSS Radflo struts. (FWIW in 7 years I've never had the dreaded KDSS lean for whatever reason.)
As a general statement I would recommend Dobinson's variable rate coils. The caveat being you really need to be in the weight ranges [MENTION=148378]Crikeymike[/MENTION] has listed for each coil. If not you're going to get too much lift and it will ride like hell and most likely cause problems with your KDSS. From your signature I would say that you aren't carrying enough weight to run the 701V but I can't be sure. The question I would probably ask myself first is do I really need 3" lift in the back? Especially considering that lifting less in front is preferable from a performance standpoint and thereby you can probably get away with less rear lift. I maintain approximately the stock rake so that when I load up it ends up level.
I'd get with [MENTION=148378]Crikeymike[/MENTION] and detail your setup and see what he says.

Best of luck

Hey thanks for the feedback!
Currently I’m running the c59-729 and they are toooooo stifff.

My sig had to be updated. Sorry about that. I’m running a c4 dual swing with spare tire, skids, sliders, roof rack, rtt, taking out my drawers putting in a goose gear platform/ fridge. Even with all of this my 729s are too stiff. Is your ride really tall? I was thinking about going down to 727 but saw those variable springs but saw it was a 3” compared to a 2”. What do you think? I don’t want to loose down travel with a 3”er

 

[PAKM4N]

Usually not. You're pushing it to the max with that kind of lift height, and since KDSS is limited in the rear by shock length, you wouldn't be able to have much down travel left at all.

The piston side of the sway bar contacts the panhard rod just after full extension of the Dobinsons GS59-701 rear shocks, so that's the limiting factor.

Also, I've found that over 2.5" of rear lift, the KDSS system produces a lean that can be really hard to balance out, if at all.

That said, some guys with KDSS are running some of the 3" Dobinsons rear coils. Maybe they'll chime in here with their thoughts on it, and their combination of parts too.

Thanks mike! You think there’ll be a variable spring for KDSS?!

 

[Crikeymike]

Thanks mike! You think there’ll be a variable spring for KDSS?!

No plans to make any shorter height variable rate springs

 

[comtn4x4]

Hey thanks for the feedback!
Currently I’m running the c59-729 and they are toooooo stifff.

My sig had to be updated. Sorry about that. I’m running a c4 dual swing with spare tire, skids, sliders, roof rack, rtt, taking out my drawers putting in a goose gear platform/ fridge. Even with all of this my 729s are too stiff. Is your ride really tall? I was thinking about going down to 727 but saw those variable springs but saw it was a 3” compared to a 2”. What do you think? I don’t want to loose down travel with a 3”er

I'd be hard pressed to make a recommendation for what would work best for you. Is my rig really tall? IDK I guess. My hub to fender measurement in the rear is 23.75" unloaded. I don't think that's especially tall but it's all relative. The coils did settle bout 1/2" after about a month. Your rig is most likely heavier than mine considering the RTT and the drawers. IMHO this is where you just have to play around and see what works for you. Coils are pretty easy to sell if you don't like them and are relatively easy to install. However, the variable rate coils are much taller and are a bit of work to get in.
Again, I would really defer to [MENTION=148378]Crikeymike[/MENTION] for advice specific to your setup. From the specs listed for your current coils and the 701V's it seems to me the 701V's are rated for slightly less load and are variable in addition to that so... maybe? :noidea:

 

[Crikeymike]

So this is normally the crossover from a 2" coil with the appropriate constant weight to a 3" coil with the Dobinsons options.

C59-325 - C59-675V
C59-327 - C59-677V
C59-329 - C59-701V
C59-331 - C59-749V

You're already running the C59-329 coils which are suitable for the weight you're carrying. I think you need to take a look at your shocks, as they might be affecting the quality of your ride.

Rear hub to fender at 2" of lift is usually right at 24", as an average.

 

[PAKM4N]

I’m running c59-729. It is the same as 329?

So this is normally the crossover from a 2" coil with the appropriate constant weight to a 3" coil with the Dobinsons options.

C59-325 - C59-675V
C59-327 - C59-677V
C59-329 - C59-701V
C59-331 - C59-749V

You're already running the C59-329 coils which are suitable for the weight you're carrying. I think you need to take a look at your shocks, as they might be affecting the quality of your ride.

Rear hub to fender at 2" of lift is usually right at 24", as an average.