Titanium Hinge Pin Kit(10):SC10, RC10 B4.1/T4.1 RC10 B4 TI HINGE PIN KIT This is the Lunsford Titanium Hinge Pin Kit for the Associated RC10B4 and T4 kits. The hinge pins connect the suspension arms to the bulkheads and hub carriers. Titanium construction for strength and light weightINCLUDES: Two inner front pins. Two outer front pins Two inner rear pins, Two outer rear pins Two king pinsREQUIRES: Assembly onto kit.