I replaced my stock leaf springs on my 2021 Tacoma TRD Pro with two of these RXT's from Icon. They were packaged well enough (could have been better, but it didn't get damaged), and came with all the hardware to assemble the RXT's for the Option 3 setup; however, it doesn't don't come with new u-bolts, nuts and washers—I ordered the associated kit from Icon and it all worked flawlessly. I mounted them with the 1"" spacer, and have my bed loaded with about 600lbs and have the 1.2"" rake mostly due to the spacer block. If your wanting to have more weight in the back than 600lbs, I'd recommend a higher weight capacity leaf spring. For me this works great though.