Rear A-Arms for ARRMA Big Rock Senton and Granite 4x4's They've eliminated most of the

They've eliminated most of the hard rib angles in favor of smoothly contoured curves that enhance survivability during extreme impacts

planets and asteroids

-Battery meter features one green and one red LED for easy-to-read GO/NO GO status

Redesigned reinforcing rib supporting the tie rod mount

Rear A-Arms for ARRMA Big Rock Senton and Granite 4x4's They've eliminated most of theRPM A arms for the 4x4 3S BLX 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: RPM has added a second shock mount to both front and rear A arms to the outside of the stock shock mount, adding adjustability and improving trackability. RPM's outer shock