RPM80604 Rear Upper & Lower A-Arms are durable, high-performance replacement parts designed to improve suspension strength and handling on the Traxxas 1/16 E-Revo. Made from RPM’s tough composite material, these A-arms resist bending, cracking, and wear during aggressive driving and off-road use. They help maintain proper rear suspension geometry, ensuring consistent stability, control, and performance. Perfect for replacing worn stock A-arms or upgrading for racing, bashing, and rugged terrain.