RPM Traxxas X-Maxx Upper & Lower A-Arms (Black) (2)

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RPM Traxxas X-Maxx Upper & Lower A-Arms were developed to handle the weight and the punishment the massive X-Maxx trucks can dish out. Starting with the upper A-arm, RPM used their proven A-arm designs from past successful builds to create an upper support structure sure to handle anything you can throw at it! The lower A-arm has better ground clearance than stock A-arms and has a cross section based off of the proven RPM 1:5 scale HPI Baja A-arms so you know they’re tough! They also created a double support beam on the lower arms to spread impact energy over a larger area, meaning hard hits won’t force you into the “walk of shame”. They’re also universal fit, which means they’ll fit on any corner of your truck!

RPM X-Maxx A-arms are molded in RPM's trademark blend of incredibly tough, engineering grade nylons and made in the USA. RPM X-Maxx arms are backed by their industry-leading limited lifetime warranty against breakage for worry-free performance you can count on!

NOTE: Each package comes with one upper and one lower A-arm. Four packages will be needed to complete one full vehicle.


  • Stronger than stock
  • Lighter than stock
  • Sold with 1 – upper and 1 – lower a-arm in each package
  • 4 packages needed per vehicle
  • Replaces the upper a-arm from stock Traxxas TRA7729
  • Replaces the lower a-arm from stock Traxxas TRA7730 & TRA7731

This product was added to our catalog on June 21, 2016.