Dobinsons 5th Gen T4R Suspension options - from Exit Offroad

[Crikeymike]

mike: i saw a post today on IG about hydro bumps Dobinsons sells. threaded body for easier adjustment really caught my eye. you have any prices? 2" body with a 2" stroke would be ideal for the front and the rear i saw they have multiple sizes but they're in that funny metric system

Hey man. I haven't been pushing them because you would have to weld brackets into place to hold them. They're not a bolt-on option, and I'd hate for someone to think they could buy them and bolt them on.

EDIT: They're working on a bolt-on rear bracket setup for the rear of popular Toyota and Lexus models. Not for the front though

I'll look up the pricing

Here are the details:

Dobinsons race ready hydraulic bump stops combine an off-road racing inspired triple seal design, a 3mm thick EDP coated steel body and includes interchangeable Rubber or Nylon rod ends to provide smooth, quiet, improved bottom out control during the harshest impacts with the ultimate in quality and longevity. The fully rebuildable and tunable shimmed CNC piston design allows a smooth initial impact with a progressive, velocity-sensitive increase in compression resistance to absorb impacts at the limits of suspension travel, whilst providing rebound damping to slow the bump stop rebound speed and reduce bucking and uncontrolled rebound associated with regular bump stops. Tunable Shim Stacks, Oil Levels and Nitrogen Gas pressures offer unlimited tuning combinations for your 4x4 or Off-road Race Rig to get the very best performance out of your suspension.

FEATURES:
CNC Machined 50/60mm Billet Aluminum Piston
EDP Coated 3mm Thick 56/66mm Steel Body
Threaded Body For Height Adjustment
Supplied with both Interchangeable Super Quiet Rubber Rod End & Hard Nylon
Available in 3 sizes: 56mm body x 50mm stroke, 66mm body x 57mm stroke & 66mm body x 85mm stroke
30/40mm Micro Polished Hard Chrome Shaft
Slow Rebound Valving To Prevent Bucking
Removable Dust Cover Boot For Stealth Appearance
Fully Rebuildable & Tunable
O-Ring Travel Indicator
Heavy Duty Extreme-Race style Triple Seal Design
Nitrogen Gas Charged & Tunable (100 to 300 PSI)
Extra Short Dead Lengths For Compact Fitment
* Threaded Mounting Cans sold separately

 

[honda250xtitan]

Hey man. I haven't been pushing them because you would have to weld brackets into place to hold them. They're not a bolt-on option, and I'd hate for someone to think they could buy them and bolt them on.

I'll look up the pricing

Here are the details:

Dobinsons race ready hydraulic bump stops combine an off-road racing inspired triple seal design, a 3mm thick EDP coated steel body and includes interchangeable Rubber or Nylon rod ends to provide smooth, quiet, improved bottom out control during the harshest impacts with the ultimate in quality and longevity. The fully rebuildable and tunable shimmed CNC piston design allows a smooth initial impact with a progressive, velocity-sensitive increase in compression resistance to absorb impacts at the limits of suspension travel, whilst providing rebound damping to slow the bump stop rebound speed and reduce bucking and uncontrolled rebound associated with regular bump stops. Tunable Shim Stacks, Oil Levels and Nitrogen Gas pressures offer unlimited tuning combinations for your 4x4 or Off-road Race Rig to get the very best performance out of your suspension.

FEATURES:
CNC Machined 50/60mm Billet Aluminum Piston
EDP Coated 3mm Thick 56/66mm Steel Body
Threaded Body For Height Adjustment
Supplied with both Interchangeable Super Quiet Rubber Rod End & Hard Nylon
Available in 3 sizes: 56mm body x 50mm stroke, 66mm body x 57mm stroke & 66mm body x 85mm stroke
30/40mm Micro Polished Hard Chrome Shaft
Slow Rebound Valving To Prevent Bucking
Removable Dust Cover Boot For Stealth Appearance
Fully Rebuildable & Tunable
O-Ring Travel Indicator
Heavy Duty Extreme-Race style Triple Seal Design
Nitrogen Gas Charged & Tunable (100 to 300 PSI)
Extra Short Dead Lengths For Compact Fitment
* Threaded Mounting Cans sold separately

yea makes sense

Total chaos has a weld on kit for the rear end, Dirt King told me they have a kit (not on the site yet) for the front. so there would be options to add these for the guys who can weld/have a shop weld for them.

 

[Crikeymike]

yea makes sense

Total chaos has a weld on kit for the rear end, Dirt King told me they have a kit (not on the site yet) for the front. so there would be options to add these for the guys who can weld/have a shop weld for them.

I dug a little deeper.

So there are 3 different sized bump stops made. All are height adjustable
2.2" body is $250 each - made in one length
2.6" body is $300each - made in 2 different lengths (0-4"lift and 4-6" lift)

Weld-on threaded cans to hold them are $30 for the 2.2" and $50 for the 2.6" size, sold as a pair

They are working on a bolt-on rear bracket for 4Runners and Tacomas to use these hydraulic bump stops without needing custom fabrication to get them installed on the rear. No custom brackets for the front though.

I'll be adding them to my site shortly, as the bumps are already in stock in the US

 

[honda250xtitan]

I dug a little deeper.

So there are 3 different sized bump stops made. All are height adjustable
2.2" body is $250 each - made in one length
2.6" body is $300each - made in 2 different lengths (0-4"lift and 4-6" lift)

Weld-on threaded cans to hold them are $30 for the 2.2" and $50 for the 2.6" size, sold as a pair

They are working on a bolt-on rear bracket for 4Runners and Tacomas to use these hydraulic bump stops without needing custom fabrication to get them installed on the rear. No custom brackets for the front though.

I'll be adding them to my site shortly, as the bumps are already in stock in the US

dude awesome thanks. is the rear setup inside the coil spring like the ICON kit or on the outside frame rail? i'd bet the 2.2" ones are ideal for the 4runners.

 

[Crikeymike]

dude awesome thanks. is the rear setup inside the coil spring like the ICON kit or on the outside frame rail? i'd bet the 2.2" ones are ideal for the 4runners.

Probably so, inside the coil, but I'm not sure. I haven't seen the design yet.

Yeah, the 2.2" ones would be good for these.

 

[Crikeymike]

FYI, long travel front and rear MRA 3-way adjustable struts are due in next week.

MRA59-A574 and MRA59-A575

Those long travel rears have taken a looooong time to come in, but they're finally due!!
Dobinsons 3-way adjustable MRR (MRA) Long Travel Front Struts for 2010+ 4Runner FJ Cruiser GX460
Dobinsons 3-way adjustable MRR (MRA) Long Travel Rear Shocks for 2003-20 4Runner, FJ Cruiser, GX470

 

[srsrogerissrs]

FYI, long travel front and rear MRA 3-way adjustable struts are due in next week.

MRA59-A574 and MRA59-A575

Those long travel rears have taken a looooong time to come in, but they're finally due!!
Dobinsons 3-way adjustable MRR (MRA) Long Travel Front Struts for 2010+ 4Runner FJ Cruiser GX460
Dobinsons 3-way adjustable MRR (MRA) Long Travel Rear Shocks for 2003-20 4Runner, FJ Cruiser, GX470

Hey Mike, any ETA on the IMS long travel rears?

 

[Crikeymike]

Hey Mike, any ETA on the IMS long travel rears?

They're out of production and just about to ship. 8 weeks or so and they should be here

 

[LA260]

What is the difference between IMS59-50701 vs IMS59-50705?

I want to upgrade my tires to 285/70/17 and would like to minimize the chance of rubbing and that's why I would like a 3.5" front lift, but I understand that I may still need to do some mods to eliminate any rubbing no matter what I go with. Everything is stock on my 2020 Venture KDSS except sliders that will be here in a month or so.

This is the setup I'm thinking of getting but have few questions
Front
IMS59-50574
C59-302 or C59-314 for a 3.5" lift after settling?? Stock bumper. Will get hybrid type bumper in the future.

Rear
IMS59-50701 vs IMS59-50705?
C59-325 or 327? Currently have about 100lb. Might go another 100.

Other
Dobinson UCA
DD59-527KK
BS59-560 Is this needed for 3.5" lift?
PS59-4025

Thanks

 

[SpeedyKevin]

What is the difference between IMS59-50701 vs IMS59-50705?

I want to upgrade my tires to 285/70/17 and would like to minimize the chance of rubbing and that's why I would like a 3.5" front lift, but I understand that I may still need to do some mods to eliminate any rubbing no matter what I go with. Everything is stock on my 2020 Venture except sliders that will be here in a month or so.

This is the setup I'm thinking of getting but have few questions
Front
IMS59-50574
C59-302 or C59-314 for a 3.5" lift after settling?? Stock bumper. Will get hybrid type bumper in the future.

Rear
IMS59-50701 vs IMS59-50705?
C59-325 or 327? Currently have about 100lb. Might go another 100.

Other
Dobinson UCA
DD59-527KK
BS59-560 Is this needed for 3.5" lift?
PS59-4025

Thanks

You still would need to trim (depending on wheel offset) when going with a bigger tire if you plan to do some gnarly offroading (see here). Also 3.5 is pretty tall, might have CV angle issues there.

Regarding the difference between the 701s and 705s, See Mike's post here

 

[LA260]

You still would need to trim (depending on wheel offset) when going with a bigger tire if you plan to do some gnarly offroading (see here). Also 3.5 is pretty tall, might have CV angle issues there.

Regarding the difference between the 701s and 705s, See Mike's post here

Thanks. Did you have to do lot of work to make the 285/70/17s fit with your setup?

 

[SpeedyKevin]

Thanks. Did you have to do lot of work to make the 285/70/17s fit with your setup?

I'm running the stock Off-road wheels (I believe +15 offset) with a trimmed front fender. I only rubbed the mud flaps when I was super compressed and had the steering wheel turned all the way. It wasn't a bad rub as it was just plastic but it eventually got annoying on the downhill rutted parts so I removed the flaps and no more rubbing! But still very close when fully compressed

Testing rub/contact below:

Trimmed front (I believe you will need to trim just a little on the front and not as much as I did):

 

[LA260]

I'm running the stock Off-road wheels (I believe +15 offset) with a trimmed front fender. I only rubbed the mud flaps when I was super compressed and had the steering wheel turned all the way. It wasn't a bad rub as it was just plastic but it eventually got annoying on the downhill rutted parts so I removed the flaps and no more rubbing! But still very close when fully compressed

Testing rub/contact below:

Trimmed front (I believe you will need to trim just a little on the front and not as much as I did):

That looks good! I'm going to keep the stock TRD wheels.

 

[Crikeymike]

What is the difference between IMS59-50701 vs IMS59-50705?

I want to upgrade my tires to 285/70/17 and would like to minimize the chance of rubbing and that's why I would like a 3.5" front lift, but I understand that I may still need to do some mods to eliminate any rubbing no matter what I go with. Everything is stock on my 2020 Venture KDSS except sliders that will be here in a month or so.

This is the setup I'm thinking of getting but have few questions
Front
IMS59-50574
C59-302 or C59-314 for a 3.5" lift after settling?? Stock bumper. Will get hybrid type bumper in the future.

Rear
IMS59-50701 vs IMS59-50705?
C59-325 or 327? Currently have about 100lb. Might go another 100.

Other
Dobinson UCA
DD59-527KK
BS59-560 Is this needed for 3.5" lift?
PS59-4025

Thanks

The 705's are comfort valved for an empty rear end. The 701's are "normal valved". For 100lbs or more, with possible plans to add more, I'd suggest the 701's for the rear.

The listed lift heights I give are once settled, and with the adjustable height IMS, you can set them to whatever height you want essentially. The 314's would be more ideal for the possible added bumper later. 302's on IMS59-50574 set to 226mm seat height will give ~3.5" with stock weight. 314's will be 4", too much for stock weight, so they'd have to be set down a little, then cranked up later if/when you add bumper weight to the front.

Rear coils, depends if you think you'll keep bolting on more weight. The 327's may be a little too much, but if you think you'll hit the 200lb range of rear weight, or more, those would be good.

BS59-560 is a good idea with the long travel struts so that you don't risk hitting full compression stroke in the long travel struts so easily.

 

[LA260]

The 705's are comfort valved for an empty rear end. The 701's are "normal valved". For 100lbs or more, with possible plans to add more, I'd suggest the 701's for the rear.

The listed lift heights I give are once settled, and with the adjustable height IMS, you can set them to whatever height you want essentially. The 314's would be more ideal for the possible added bumper later. 302's on IMS59-50574 set to 226mm seat height will give ~3.5" with stock weight. 314's will be 4", too much for stock weight, so they'd have to be set down a little, then cranked up later if/when you add bumper weight to the front.

Rear coils, depends if you think you'll keep bolting on more weight. The 327's may be a little too much, but if you think you'll hit the 200lb range of rear weight, or more, those would be good.

BS59-560 is a good idea with the long travel struts so that you don't risk hitting full compression stroke in the long travel struts so easily.

Thanks! I'll probably go with 302s in the front and 325s in the back. i'll change the springs later if needed.

 

[BIGpharma]

Install ready!

Sent from my iPhone using Tapatalk

 

[Crikeymike]

Install ready!

Sent from my iPhone using Tapatalk

Let us know how it goes. I don't think anyone else has yet combined the Eibach struts/shocks with the Dobinsons coils.

 

[BIGpharma]

Let us know how it goes. I don't think anyone else has yet combined the Eibach struts/shocks with the Dobinsons coils.

Definitely will!

 

[Chrispapp]

I was thinking about the same thing. Eibach shocks front and rear, and dobinsons front and rear springs. I have KDSS so should prevent any lean without having to use spacers with their offset KDSS springs. The Eibach kit was going to go with the 2.75 in front and 1 in the rear, but want a little rake and in case I load the back up to tow something wont have sag. mixing the two seems to be a good combo. Heard nothing but good things about the eibach kit for how it rides on the road, which is 95% of the time and my daily driver, but heard about getting the lean. Also using the eibach kit you dont need UCAs. Trying to avoid that for now if I can b/c of cost and still want to get the alignment into spec for drivability

 

[SpeedyKevin]

I was thinking about the same thing. Eibach shocks front and rear, and dobinsons front and rear springs. I have KDSS so should prevent any lean without having to use spacers with their offset KDSS springs. The Eibach kit was going to go with the 2.75 in front and 1 in the rear, but want a little rake and in case I load the back up to tow something wont have sag. mixing the two seems to be a good combo. Heard nothing but good things about the eibach kit for how it rides on the road, which is 95% of the time and my daily driver, but heard about getting the lean. Also using the eibach kit you dont need UCAs. Trying to avoid that for now if I can b/c of cost and still want to get the alignment into spec for drivability

What about the Eibach kit prevents the need for UCAs? That is if you lift above 2in.

Also, seeing that you'd like to get UCAs eventually, I strongly recommend just waiting and saving up for them so you can install it all at once and not pay for more work and two alignments!