RPM Rear A-arms for the ARRMA Big Rock, Senton & Granite 4x4s upgrade Requires: ESC

Requires: ESC

Adjustable steering and throttle sensitivity (exponential)

providing superior rigidity and durability while keeping the buggy lightweight

New high response high torque KS4031-06W water proof steering servo

7" (196 mm)

RPM Rear A-arms for the ARRMA Big Rock, Senton & Granite 4x4s upgrade Requires: ESCSuper 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,