It's Rock Krawlers hybrid Heim joints. They are strong and never had any issues with them. simple and effective. not noisy, no complaints just wanted a longarm so I did and now no longer need my old setup. Metalcloak springs are included in the price. they run like 190$ for each set new and only have about 20k miles on them. They are stiff but still plush. they do provide a bit more lift than advertised even on a loaded armored up rig. I got just over 4" of lift out of them but they too will probably settle a bit over time, I wanted a true 4'' so I went to evo plushrides, honestly though the ride quality is very similar. shocks would have more effect on the ride. I'm on fox evolution series so a very basic shock and nothing crazy nice but the whole setup rode well for a mid/short arm lift. Hope this helps in your decision making