If you're into RC cars and your Associated vehicle needs some TLC, these differential drive rings are exactly what you're looking for! Part number 6579 is the genuine Team Associated replacement for select RC10 models. When your differential isn't performing right or you're doing a rebuild, these precision rings make all the difference in getting your car running smoothly again. They're OEM parts, which means they fit perfectly and perform exactly like the originals - no guessing about compatibility or quality. I've used these in several of my RC10 builds and they always deliver consistent, reliable performance. Installation is straightforward if you're familiar with RC mechanics - just follow your vehicle's manual for the exact placement. The quality is what you'd expect from Team Associated - durable materials and precise manufacturing that stands up to serious racing conditions. Whether you're fixing up an old favorite or maintaining your current racer, having the right replacement parts like these drive rings is crucial for optimal performance. Much better than trying to make aftermarket parts work or dealing with poor performance from worn-out components. Keep your RC running like it's supposed to with these genuine replacement rings!