Dobinsons IMS Struts and Shocks for 2007+ Tundra's (IFP Monotubes)

Alright guys, I know a lot of you are still waiting on the external resi version of these (the MRA's), but they're just not done yet (edit, yes they are now). But the new IMS are finally in stock and shipping now!!

IMS = Internal resi Monotube Shock.

• Adjustable height front struts, massive 2.6″ size body front and rear with 60mm pistons, IFP (Internal Floating Piston) technology
• Fully rebuildable and re-valvable
• Zero shock fade in all terrains with full load
• Direct, bolt-on replacement for easy fitment
• IFP – Internal Floating Piston, separates oil and nitrogen
• Corrosion resistant (EDP Surface Protection)
• Heavy duty single piece lower leg
• Enormous oil capacity
• Heavy Duty 3 Stage FKM HNBR Sealing System for the ultimate in reliability
• Race inspired hi-flow CNC 6061 Billet alloy piston – for the ultimate in offroad handling
• 66mm/2.6” Bodied Series – 60mm hi-flow CNC 6061 Billet alloy piston – 60mm bore – Vehicle specific fitment – Suitable for most heavier vehicles
• IMS59-60710 - 615mm extended, 445mm compressed lengths
• IMS59-60711 - 642mm extended, 401mm compressed lengths
• 4 Clip height settings. Lowest clip is OE/stock height, each clip up adds approximately 1/2" of lift to whatever coils are used. Can be used with stock coils or Dobinsons. Fine tune lift height or offset for vehicle lean.

The fronts are available to order separately (sold in pairs): https://exitoffroad.com/product/dob...p-front-struts-for-toyota-tundra-and-sequoia/
And as an assembled coilover set - https://exitoffroad.com/product/dob...bled-ims-coilovers-for-toyota-tundra-2007-21/
The rears are also available separately (sold in pairs): https://exitoffroad.com/product/dobinsons-ims59-60711-ifp-rear-shocks-for-toyota-tundra-2007-2021/

And to build a full Dobinsons suspension kit with the IMS struts/shocks and all available parts, that kit builder page is here: https://exitoffroad.com/product/dob...spension-kit-for-2007-2021-double-cab-4x4-v8/

I'll try and predict some of your questions here, and add to this post as needed.
1. They use stock configuration coils (pigtail at the bottom, flat ground top), so they can be used with stock coils or Dobinsons coils, or a suitable replacement that uses the same configuration
2. If you already have Dobinsons twin tubes, you can replace just them with the IMS struts and shocks without needing anything else.
3. The fronts fit the 2008+ Sequoia. There are rear IMS coming for those too. I mention this because I know there's a lot of Tundra/Sequoia crossover on the forum here.
4. There is no set rebuilt period. If you ever had a problem with them, you'd do a rebuild at that time, which is generally just new seals and oil.
5. The fronts are to be set at the stock/standard coil seat height and then the coils do the lifting without adding additional preload. They can go up from there as needed to correct a lean or to compensate for added weight if needed to regain lost height.
6. I have to say it even though a lot of people understand already, but the rear shocks don't affect the lift height. Only changing the leaf springs or blocks, or add-a-leafs will affect the rear lift height.

Some words from Dobinsons:
Dobinsons IMS Monotube Shock Absorbers are designed for next level performance over Twin Tube Shocks in those hot, harsh, demanding conditions. By utilizing the Monotube design, Dobinsons IMS Shock Absorbers are able to resist fade far longer on corrugated roads, long or hard working 4WD trips, towing or racing conditions.

The larger 60mm high flow pistons reduce internal pressures, reduce the heat generated, transfer heat to the body for faster cooling and offer improved damping performance and vehicle control at higher shaft speeds on rough terrain and during big impacts. Threaded bodies on struts allow for fine tuning of height and offer further improvements in cooling.

The micro-polished, hard chromed and heat treated shock shaft, CNC aluminum high flow race inspired piston, and DOM seamless tubing body provides the ultimate in performance and off-road durability.

Composite piston wear bands and a race style 3-stage sealing system offer the lowest levels of friction whilst maintaining durability and longevity. Dobinsons team of engineers spend hundreds of hours of testing and tuning the shim stacks and damping characteristics in each IMS Shock to ensure a balance of comfort, handling, vehicle control and off-road performance – Enjoy the ride

Let me know if you guys have any questions!

 

Edit/NOTE: The Tundra front IMS use a clip height setting for the coil seat instead of the threaded body and adjuster nuts, making setting and changing heights a hell of a lot easier than the threaded body. Lowest clip height = stock/OE coil seat height.

Here's a video I did earlier last year for the smaller size Tacoma/4Runner IMS, but this info may help you understand the product better.

https://youtu.be/Npfx40VD3kM

 

This looks tempting! How much lift can the rear shocks handle? Any different from the regular twin twin design in that aspect? I would likely do the full leaf pack plus a 1.5" shackle as well.

 

I’m saving up for the MRA’s when they come out.

 

The IMS work within the same lift height parameters as the twin tubes do. They're no longer or shorter.

 

Great, thank you. These are certainly temping. I have zero use for an external reservoir shock besides looking cool in the Lowe's parking lot. So these are nice because I certainly wouldn't mind more adjustability, and frankly, not having yellow shocks lol

 

Are the price per shock or for a pair?

 

Per pair.

All shocks and springs are sold in pairs.

 

That makes these very tempting.

 

When do the mra come out?

 

As soon as they're made and shipped over. Lol

There is no date for when that will be.

 

How much rear lift can the shocks take? Thinking about switching out my Bilstein 5160's for these.

 

I think it was up to 3 inches?

 

They're good for up to 2.5" of lift. Could probably do 3", but just have limited down travel then because of the additional lift.

 

wow! That's awesome. Would you consider the rears an upgrade from the 5160s? And are the rears in stock?

 

Yes, I'd say so. Bigger/stronger body, bigger pistons, better mounting surfaces, no worries about a resi, triple sealing system.

Yes, the rears are in stock. Here

 

Ordered. Thanks. Going to run the dobinson rears with my Bilstein 6112s until the front MRR's come out. You think that'll be fine?

 

Edit. You answered my first question in your post, damn I am getting old and it is hard to read on my phone.
Can they be outfitted with heavier coils? I run 700lbs springs on my kings due to heavy plate bumper, winch, full steel skids, sliders and a Four Wheel Camper on the back. The stock Kings 600lb springs couldnt handle the weight.

Will reseal kits be available or will they be limited to authorized repair shops?

 

Awesome, thanks for that!!

Oh yeah, no problem running them with that combo. Monotube and monotube is fine. If they were a different type of shock then it might be weird.

 

Hahah, forums from a phone are so difficult to read, I find that too.

Yes, reseal kits will be available so any outside shop can do the work.

Oh yeah, the heavier load Dobinsons coils are over 700LB, so you can run whatever you like, except that the coils need to have the factory configuration of pigtail at the bottom and flat ground at the top. most Kings are flat top and bottom and use a different mounting system.

This is on a 1st Gen Tundra, but you'll see how the coils are mounted, and they go all the way up to a stock rubber strut isolator and mount.

 

I think this is my solution. Not breaking the bank but having a legit set up.

 

For sure! I'm excited. I think I can get another 30k miles out of the Bilstein 6112s and then hopefully by then the MRR will be available. How will those front coil-overs be different from the existing ones that came out? Are the IMS ones a coil-over still, or a strut?

 

These come w/o coils right?

How would I go about ordering with coils and assembled? Dont want to swap out the rear leafs and plan to use my shackles.

 

You can call it what you want, but a factory strut and coil is a coil-over-strut assembly, so anything you put in place is technically a coilover. People like to play around with that term, and I never understood why. "I'm going to take out my coil-over-struts and put in some coilovers instead". hahaha

The MRA's will have a hose and external resi with 3 levels of valving adjustment. That will be the main difference.

 

Correct, the coils and top mounts wouldn't come with it.

Select the struts, then the coils you want, then add this item to it too: https://exitoffroad.com/product/strut-assembly-and-mounts-tundra-sequoia/

 

I had to correct some text in the first post as I didn't realize these new front IMS struts come with a clip height setting instead of a fully threaded body. All the fullsize trucks uses this style (Ford, Chevy, and Dodge). This makes setting the height a lot easier during assembly, and also allows for better corrosion resistance since it's not fully threaded, the EDP coating covers the 66mm body better with just 4 clip heights.

Here are the actual product photos of the front IMS struts for the 2007+ Tundra

 

Seems a lot like the Bilstein 6112 then with the clip heights. Do you know the lift heights for each ring?

 

I'm waiting on verification, but it looks like they're either 5 or 6mm, so about 1/4".

These are designed to use lifted coils to get the lift, then it can be fine tuned for a little additional height or lean correction with the clip heights, whereas the 6112's use preload of the springs they come with to add the lift.

 

These look great, I might upgrade my rears shocks with these.

 

Can you delete your post please? Wrong place to be talking about non-Tundra stuff. I'll PM you