This is a set of optional RPM Rear A-Arms, and are intended for use with the Traxxas Jato. These rear A-arms for the Traxxas Jato feature everything you've come to expect from RPM products - durability, strength, light weight, and the best possible value. RPM rear Jato A-arms have been redesigned to fit in the stock locations with less end-play than stock A-arms at both the inner and outer hinge pins, yet still retain all stock geometry for near perfect fits every time! Combined with a set of RPM Front Jato A-arms, your racing confidence will skyrocket because you won't have to worry about breaking fragile, stock a-arms any longer.