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.
