Front A-arms for the ARRMA Big Rock, Senton & Granite 4x4s air brush New mechanical handbrake feature

New mechanical handbrake feature

Speed Approx

5 grams lighter than stock*

An all-new molding process developed by the engineers at PROTOform has allowed us to capture realistic front and rear undercuts on the Z28 without the need for an add-on nose piece

Front A-arms for the ARRMA Big Rock, Senton & Granite 4x4s air brush New mechanical handbrake featureRPM 81492 Front A arms for the ARRMA Big Rock, Senton & Granite 4x4s 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,