Description:Optional Anti-Roll Bar Set for the Xpress Execute XQ1S! Comes with all mounting hardware and thicknesses of roll-bars for you to setup the car to your liking! This updated version features aluminum balls for smoother and a lighter all up weight. One pack includes front and rear.Feature:For: Xpress Execute XQ1S XQ2SMaterial: Aluminum/PlasticColor: Black/RedInclude:Rollbars (6 pcs)Aluminum Collars (2 pcs)Ball Studs (4 pcs)Set Screws (10 pcs)Ball-ends (8 pcs)