Our performance lower arms are designed to replace stock length lowers and offer several benefits. They are compatible with stock rubber bump stops or can be upgraded to a FOX or King bump stop for increased bottoming resistance. These arms prioritize ground clearance and off-road performance, featuring internal gusseting and pivot on FK 1" uniballs at the frame. Uniballs ensure zero binding during suspension cycling and zero flex under braking, resulting in consistent geometry and alignment. The uniball spacers have a diameter of 1.50", providing better clamping force in the frame mounts and preventing ovaling out over time. The lower ball-joint is replaced with an FK 1.00" uniball at the spindle for maximum strength and articulation. No modification to the spindle taper is required as machined heat-treated stainless-steel mis-alignment spacers are used. Our one-piece tapered uniball spacer is designed for superior strength. The arms come ready to install with all necessary hardware included and are the strongest stock length aftermarket arms available on the market.