RPM Rear A-arms for the ARRMA Big Rock, Senton & Granite 4x4s inner The volcano epx pro has

The volcano epx pro has received a full refresh for 2022 with a new body

The street body arrives factory-finished with new matte gloss effect designs

Durable and quick to charge

Nickel Plated for durability and protection against oxidation or corrosion

Extended-wheelbase rear suspension arms (+10 mm)

RPM Rear A-arms for the ARRMA Big Rock, Senton & Granite 4x4s inner The volcano epx pro hasSuper 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,