This is the kit that has all the parts that we are always using in the shop for customers Single triangulated four links suspensions. This has all the parts that are made to stand up to the abuse that Rock Crawlers and Trail Rigs see and then some. This kit includes our rebuild-able and grease-able Enduro joints, giving you a longer lasting joint.Read our blog: 4 Link Suspension Installation TipsThe kit includes. 2 x Axle Link Mount Bracket Pair 0 Deg Standard2 x Truss Link Mount Brackets 2 x Frame Link Mount 2 x Adjustable Inner Frame Link Mount Pair 20 Deg 4 x Enduro Joint 1 1/4"- 12 RH 9/16"4 x Enduro Joint 1 1/4"- 12 LH 9/16" 4 x 1-1/4" - 12 Jam Nut LH 4 x 1-1/4" - 12 Jam Nut RH 4 x Standard Tube Insert (1-1/4-12) 1 1/2" ID Tube4 x Heavy Wall Tube Insert (1-1/4-12) 1 1/2" ID Tube This is great for the do it yourself fabricators looking do their own 4 link system. If for any reason you need to exchange any of the items in the kit just let us know and we will make a kit to fit your project!