The Samix SCX24 Brass Rear Upper Link Mount is an optional accessory that adds weight, strength and rigidity to the SCX24 platform. Constructed from high-quality brass, this link mount is a direct fit for the stock link mount and adds 5g for a better weight bias. The link mount has been given a black coating to help prevent corrosion buildup over time. Package includes one SCX24 brass rear upper link mount and mounting hardware.