Skip to product information

RPM81502 Rear A-Arms for ARRMA Big Rock, Senton and Granite 4x4's

SKU: RPM81502
RPM 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 mount lowers the ride height, increasing stability on all surface types. A lower ride height also means faster corner speeds.

Durability: Molded from trademark blend of indestructible, engineering grade nylons, you can't get much tougher! They've also redesigned the shape of the A-arms while retaining stock suspension geometry to help improve survivability for those "oops" moments.

Lightweight: With stronger materials and improved designs, there is less unnecessary weight while still offering suspension components that are unparalleled in performance and durability.


  • fits 3s BLX 4x4 versions of the Big Rock, Granite & Senton
  • exclusive 2nd shock mount hole for added adjustability
  • replaces stock #AR330516