RPM Rear A-arms for the ARRMA Big Rock, Senton & Granite 4x4s TRA2072X The aggressive tread design and

The aggressive tread design and lug spacing release dirt and debris

Front light pods and rally-style stickers included

Traxxas EZ-Set one-button setup

Common bearing for steering assemblies and transmissions 5x8x2

Optional gyro unit set (MZW446) can be installed

RPM Rear A-arms for the ARRMA Big Rock, Senton & Granite 4x4s TRA2072X The aggressive tread design andSuper tough RPM rear arms that fit many Arrma 3s and Mega vehicles. RPM A arms for the 4x4 versions of the Granite, Senton & Big Rock are the answer to the questions you didn't know you had. Are you looking for more adjustability? Check! How about better durability? Got that covered too. How about lightweight? Yup, no problem! Adjustability: We've added a second shock mount to both our front and rear A arms to the outside of the stock shock mount,