RPM Heavy Duty Rear A-arms Losi MiniB 2pcs

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RPM heavy duty rear A-arms for the Losi Mini-B have been strengthened for superior durability and performance.

  • Replaces The Rear A-Arms From Stock Losi Part LOS214003
  • Inner Hinge Pin Bosses Are Roughly 25% Thicker Than Stock
  • Overall Thickness Has Been Increased By Roughly 25%
  • Unique Shock Surround Protects The Lower Shock Bottom
  • Works Exclusively With The Mini-B


ll of these strengthening upgrades, combined with some of the best engineering grade nylons in the industry equate to a set of ultra lightweight replacement A-arms that have unmatched durability and performance. Place your trust in American made. Trust RPM.


  • The inner hinge pin bosses are roughly 20% thicker than stock (and dramatically thicker than first gen Losi A-arms).
  • We’ve increased the overall thickness of the A-arm by roughly another 25%.
  • Support beams are consistent on thickness and are roughly 50% thicker than some of the thinner stock supports.
  • Unique shock surround protects the lower shock bottom. It’s less prone to damage since the shock pivot ball is captured and no longer fully exposed.
More Information
Part # 72312
Brand RPM