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SKU: TOY070KP
Twin-Tube Design
Foam Cell Technology
Ride Height Adjustable
For Long-Term Use/Rebuildable Design/Engineered to Outperform OEM
On all lift kits!
Heavy-Duty Performance Suspension - Built for the Extreme
Foam Cell Pro is IRONMAN 4X4's most durability-focused suspension system. It's engineered to perform under sustained heat, constant load, and harsh terrain - day after day - without retuning, readjustment or rebuild schedules.
TRUSTED PERFORMANCE
Choose Foam Cell Pro if you:
WHERE FOAM CELL PRO FITS
Not all suspension systems are designed for the same job.
Foam Cell Pro is for owners who value dependability over adjustability - and confidence over constant tweaking.
The original brief was simple and unforgiving: build a suspension system that could operate reliably in extreme heat and cold, carry the constant weight of up-armored vehicles, and survive day after day of harsh terrain and abuse — without failure or maintenance interruptions.
Complex adjustable valving wasn't the priority. Dependability was — so operators could focus on the mission, not their equipment.
That requirement shaped everything that followed.
Most gas-charged shocks rely on pressurized nitrogen. Under prolonged heat and heavy use, that gas can aerate — leading to fade and inconsistent performance.
Foam Cell Pro takes a different approach.
Suspension should start with the job required of it — not the spec sheet. Foam Cell Pro is engineered around that principle.
This is not a race shock, and it is not built for constant tuning. It is matched to the truck you are actually building — the one that gains weight with every accessory and needs to stay dialed in as it does.
That is the kind of quality you appreciate on year three, not just mile three.
Remote reservoir shocks are excellent at:
They are commonly chosen for:
Remote reservoir shocks do not equal “better” but serve a different performance priority. Maintenance depends on usage, not just design.
Foam Cell Pro is engineered for:
Foam Cell Pro increases oil volume internally and replaces pressurized nitrogen with high-density foam, eliminating cavitation and reducing fade without external components.
| FOAM CELL PRO | REMOTE RESEVOIR SHOCKS | |
|---|---|---|
| Long-distance consistency: | ||
| ✔ Excellent | ✔ Very good | |
| Heat resistance: | ||
| ✔ Excellent | ✔ Excellent | |
| Adjustability: | ||
| ✔ Minimal | ✔ Possible | |
| Maintenance required: | ||
| ✔ Minimal | ⚠ Periodic rebuilds, typically 15K – 20K* | |
| External components: | ||
| ✔ None | ✖ Hoses & reservoirs | |
| Ideal for constant load: | ||
| ✔ Yes | ⚠ Depends on tuning, usually no. | |
| "Set it and forget it": | ||
| ✔ Yes | ✖ No |
Overall rating: 4.737864 / 5 from 309 reviews.
This suspension lift kit is designed for heavy-duty performance, offering improved stance, ride quality, and durability. It's engineered for extreme conditions and is easy to install, with beefy shocks and solid suspension. Customers praise its dependability, ease of installation, and fantastic customer service.
Review topics: ["size","fit","weight","issues","improvement","quality","performance","experience","shipping","packaging","looks","price","customer service","setup","instructions","support","finish","arms","durability","service","height","speed","warranty","feels","results","set","work","value","ride","kit"].
"So far, I really like this lift. The biggest obstacle was getting the old components out. The installation with the help of the YouTube video was the easy part. The old Lexus now has a functioning suspension that has good on road manners and significantly better clearance off road. Plus, the stance is awesome!"
"I waited roughly 90 days to leave this review so I could give everything a proper break-in and actively hunt for any issues. After 3 months of daily driving and trail time, I’m extremely impressed with the Foam Cell Pro 3. 5" kit. Vehicle Setup: Truck: 2020 Toyota Tundra CrewMax SR5 w/35" tires. Front Setup: No winch or heavy custom bumper—running Medium springs up front with front sway bar drop spacers installed - I already had those from a spacer kit I removed from the truck. Bed & Gear Weight: Full steel skid plates, Decked drawer system (always loaded with heavy tools), Softopper, Datin Fab rack, and during the summer, a 130 lb Smittybilt XL roof top tent mounted up top. Rear & Drivetrain: Heavy Duty leaf packs in the rear, rear sway bar completely removed, and installed the rear carrier bearing drop spacer. Installation, Break-In & Alignment: I tackled the installation in the garage using Ironman’s step-by-step YouTube video, which made the process very straightforward. A major tip for the install: having two people and keeping the truck on the ground was huge—those heavy-duty rear leaf packs are HEAVY! After the first few weeks, the new suspension settled in as expected and the alignment drifted slightly. I crawled back under the truck to re-torque all the hardware, then brought it back to the alignment shop for a final adjustment. With the new UCAs, the shop had no trouble dialing the specs in perfectly, and it has stayed dead straight ever since. Ride Quality & Load Performance: Yes, it is definitely stiffer than stock, but in the best way possible. This is our go-to family road trip vehicle—when loaded up with two kids, two dogs, luggage, and 4 bikes hanging off the hitch, the heavy-duty rear leaf packs carry the weight effortlessly without any rear-end sag. Even on solo daily drives, because my Decked drawers stay packed with tools, there’s enough constant weight in the bed that the heavy-duty spring rate feels firm, planted, and controlled. Body roll is virtually eliminated—even with the rear sway bar removed—and dropping the carrier bearing kept the driveline completely smooth. Off-road is where this setup is awesome. 30-45 mph down washboard dirt roads and soaking up big dips feels completely effortless—no shock fade, no wallowing, just smooth and damp. Maintenance & Build Quality: A big feature for me is that both the UCAs and the rear shackles feature grease zerks. Proper greasing during the install paid off—90 days in and I haven't heard a single squeak or creak from the polyurethane bushings. Bottom Line: Zero complaints and zero issues after three solid months of testing. If you’re on the fence, buy it. Ironman nailed the engineering on this setup for the 2nd Gen Tundra. I went with the green springs and they look awesome."
"All parts worked well. My GX has a nice lift to it. It handles well. It did have a KDSS lean a few days after the install, but I got that fixed."
"I have the foam cell pro 3 inch front 2 inch rear set up. I ordered the front coils assembled. I chose the foam cell pro after watching some comparisons on tinkerers garage on YouTube for the overall quality, lack of maintenance other shocks required and expected longevity. I did go with the jba uca after a ton of research of various ucas available. I do wish I could have selected "no uca option" but still been able to order the rear lower control arms and rear sway bar links. The ride after installation: wow! Smooth, comfortable, feels new again but better. I liked the front sway bar relocation brackets, they just felt intuitively made. In the rear, I used a drkdss trac bar bracket vs a new adjustable bar. The rear shock nuts were a pain to get my fat fingers to get the nut started at first, but nothing bad. The shock quality really felt solid. I was worried at first because the part numbers on the rear shocks were 2 different numbers, (maybe ending fex and fes) or something, but both appear to be the same and ride great."
"Love the way it perform and feel."
"I bought a brand new 2024 Toyota 4Runner SR5 Premium and immediately installed the TOY065AAKPS3P - Foam Cell Pro Suspension Stage 3 kit with medium rate springs. The ride on pavement was noticeably tighter. It corners like a sport sedan, and the nose dive while braking was now gone. I have done some mild off-roading and it does really well. I have towed a small camper and largest u-Haul trailer. Virtually no sag under load while towing. I really like this kit. It seems well engineered and well executed."
"Definitely DIY installable, I’m replacing my first lift that is okay for a high school kid, I’m 70 so comfort is key on my fly fishing outings , my 17 ,6 speed manual Tacoma is decked out fully ."
"I have had this 3. 5in foam cell pro lift for a couple years now and didnt want to leave a review right off the bat. I have medium duty springs front and back. At the time they only had the black springs for an option. Personally I would have rather had the green springs but oh well. I also have the upper control arms. The kit has served me well. I dont do alot of extreme off roading but have done some. The ride has been good on and off road. Better than the factory trd offroad setup. It took out the lean in the corners for the most part When I 1st had it installed it was a little noisy for the 1st 4 month or so in the front springs as far as squeeking sounds intermittently getting in and out of the truck and taking slow corners but it has worked its self out and I haven't noticed the sqeeks in a while. Customer service was great to work with and no matter how dumb my question was they took the time to answer. I would like to get their front bumper next but time and money will tell for that one day."
"Had the 2” Foam Cell Pro lift kit installed and I immediately fell in love with the way my 200 series Land Cruiser looked after. Though it’s higher than 2” and it’s still new and settling in. I bought it to upgrade my worn out factory suspension. And to do some off-roading. Haven’t had the chance to test that out yet. But the ride is still comfortable for regular day to day driving, just looks better doing it now. Pics don’t do the looks justice."
"Great quality, customer service is top notch. Was not as simple to install as video implied, but took it to a shop and they installed for me. Stoked on the finished product, just what I needed for when my camper shell is installed."
Foam Cell Pro is designed for durability, consistency, and long-term performance under load.
It is ideal for:
It is not designed as a race or high-adjustability shock.
Each system serves a different purpose:
Foam Cell Pro sits in the durability-first tier.
Foam Cell Pro uses high-density foam instead of pressurized nitrogen.
This design:
This is the core reason Foam Cell Pro excels under load and over time.
Yes, it is ride-height adjustable only. Foam Cell Pro is a set-and-forget suspension system, once you customize to your build’s unique ride height needs when installing.
It is engineered with vehicle-specific valving to deliver consistent performance without:
If you want to adjust the tuning, you will need to rebuild the shock and adjust the valving and shim stack.
Foam Cell Pro delivers a controlled, stable, and planted ride.
Compared to factory suspension:
This is intentional and part of its durability-focused design.
Yes, especially for vehicles that:
If your vehicle is completely stock and you only want a softer factory feel, Lift & Level or Nitro-Gas may be more appropriate.
Yes. Foam Cell Pro kits are designed to:
Exact lift height depends on vehicle configuration and load.
No additional upgrades are required but performs best when used as designed.
Foam Cell Pro is best paired with:
It is designed to handle this added weight and reaches peak performance when under additional load.
Yes. Foam Cell Pro is well suited for towing, providing improved stability, control, and consistency compared to OEM suspension.
Yes, it is fully rebuildable so you can buy once cry once.
However, Foam Cell Pro is engineered for long service life without routine rebuilds. This reduces maintenance, downtime, and long-term ownership cost.
Absolutely. Send your vehicle details, intended use (daily, towing, overlanding), and current mods, and we’ll recommend the correct configuration the first time. You can contact us here.
Yes—many products include instructions in the box and/or downloadable PDFs. Check the product page for “Vehicle Fitment & Installation/User Guide” tab. If you don’t see it, contact support here and we’ll send the correct install guide for your SKU.
Small items typically ship parcel; oversized items (bumpers, tents, long packages) ship freight, which is noted on the product page under the add to cart button. Transit time varies by location and carrier. We typically ship orders within 2 business days of purchase.
Warranty varies by product category. The product page lists the applicable warranty under the add to cart button. If you want confirmation before ordering, contact us or see our warranty policy here.
Returns are accepted under our returns policy within 30 days of purchase. See our return policy here for full details. Because many items are vehicle-specific, verify fitment before installing. For the quickest help, contact us with your order number and the item condition.