Parts/Suspension & steering/Suspension arms & hubs/RPM Traxxas X-Maxx Upper & Lower A-Arms (Black) (2)
RPM Traxxas X-Maxx Upper & Lower A-Arms (Black) (2)
RPM

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

Part # RPM823522.7(3)
Where to buy
$24.99
AMain Hobbies
Seen Oct 12, 2026
$24.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

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.

Features:

  • 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

Reviews2.7 · 3 reviews

Reuben de VriesVerified owneron RPM Traxxas X-Maxx Upper & Lower A-Arms (Black) (2)

Tried these on my car and broke them within minutes. factory Maxx arms are a lot better. They certainly last a lot longer. Bottom arm broke where the shock mounts up. And rpm does not cover shipping costs outside of USA for warranty. Other side seems to be holding up fine. Along with the upper arms.

5 found this helpful
YaDirtVerified owneron RPM Traxxas X-Maxx Upper & Lower A-Arms (Black) (2)

Much weaker than the stock arms. First and only run lasted about 3 minutes before the rear arm broke where it attaches to the axle carrier. 3 jumps completed. No wrecks, kartwheels, etc. Just landed and the wheel popped out at an awkward angle. Thanks RPM. This product was not worth the time it took to install let alone the money it costs.

4 found this helpful
Lorne Huttonon RPM Traxxas X-Maxx Upper & Lower A-Arms (Black) (2)

i love them super tuff . only one problem the front lower pin pops out one high jumps. i am going to fix that problem with a a arm pin with nuts on both sides so it cant fall out when the a arm flexes . iv jumped like 30 plus foot high on concrete and no breakage.

What reviewers say

Reviewers disagree sharply on durability. Two reviewers, both verified owners, report the arms breaking quickly, one after about three minutes of running, with failures at the lower arm near the shock mount and at the rear arm where it attaches to the axle carrier. One of them found them weaker than stock arms, and noted that warranty shipping costs outside the USA are not covered. A third reviewer, who did not indicate verified-owner status, praises their toughness after heavy jumping on concrete with no breakage, but reports the front lower pin popping out on high jumps and plans to add a retained pin with nuts. Overall, the sample is small and the experiences conflict.

  • + Strong durability for some users
  • + No breakage after large jumps on concrete
  • + Holds up better than some reports suggest
  • − Arms broke quickly in some reports
  • − Weaker than stock X-Maxx arms per one reviewer
  • − Front lower pin can pop out on high jumps
  • − Warranty does not cover shipping outside USA
Summary generated from the reviews above.

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