Gary KampaAugust 3, 2020 at 6:33 pm 5 out of 5 I don’t post reviews, but I’ve decided to make an exception. I was looking for info about these before I bought them, and found it difficult to find good info. I bought these (black 1500lb) SumoSprings for my 2020 Toyota Tundra CM, not really knowing what to expect. What I got was a product that does every thing I could have hoped for. With my 4500lb boat in tow, box and back seat full of supplies for a week at the lake, handled the weight (little squat) and also rode firm but not harsh. Then when the trucks empty I think it rides just fine, if a little firmer I don’t really notice. This is in my opinion an excellent product, and if it will continue to perform through the years, an exceptional value to boot. Keep in mind that the U bolts should not be reused and should be replaced with new OEM.