Wednesday January 29, 2020
MSD Models over 20 years experience in RC.

RPM Front A-arms for the B44, B44.1, B44.2 & B44.3

This product was added to our catalog on Monday March 02, 2015.


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Our first objective with our version of these a-arms was to improve strength and durability without sacrificing rigidity to keep these race-bred machines at the front of the pack. Our design changes still retain all stock suspension geometry yet have been improved structurally to eliminate potential breakage points. We’ve also eliminated slop at the hinge pins and caster blocks. Our box-stock B44.2FT came with hinge pin holes with .005” (.13mm) of clearance in each hinge pin hole! That’s a total of .01” (.26mm) of slop (inside and outside hinge pins combined) before the vehicle ever ran! By tightening up these “loose” areas with our A-arms, the B44’s camber, caster and toe angles are locked in place while improving suspension performance and consistency at the same time.

We also found that the stock anti-sway bar pivot balls molded in the A-arms are .005” (.13mm) undersized. That leads to inadequate performance of the sway-bar system. We rectified that by eliminating the molded ball entirely and replaced it with a more stout, machined pivot ball (not included – see ''tech note'' below), with closer tolerances on the ball diameter.

Each RPM A-arm for the B44 is molded in black and comes with our limited lifetime warranty against breakage. When performance counts and the goal is to get across the finish line, you can count on RPM to get you there!

  • Model: RPM73432
  • 2 Units in Stock
  • Manufactured by: RPM

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