RPM sets the standard in the R/C industry for durability and all out rugged performance. Our Traxxas Nitro Rustler, Nitro Stampede, & Nitro Sport A-arms are built to stand up against the toughest abuse from the backyard basher all the way to the top-level racers. Our A-arms incorporate all stock geometry; yet have been redesigned for strength, looks, performance, and durability. We build these A-arms from our well-known trademark blend of nylons for bulletproof performance and unsurpassed durability.