RPM Associated B64/B64D Rear Arms

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RPM Associated B64/B64D Rear Arms
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Price: $12.99

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RPM A-arms for the B64 & B64D were designed to solve critical issues. With stock A-arms, the amount of slop at the hinge-pins can cause your suspension settings to wander (RPM found as much as 0.003” or .076mm of clearance in the hinge pin holes of a stock set of new A-arms). RPM hinge-pin holes are held to extremely strict tolerances, with no more than 0.0005” to 0.001” (.013 to .025mm) of clearance, an improvement of nearly 300%!

Durability is also key to staying on-track! RPM customers have repeatedly reported that stock A-arms break easily. Whether bashing or racing, RPM A-arms are the toughest A-arms on the market so a rough landing or a hit from another competitor won’t take you out of the race! RPM also uses in-line screws to retain the outer hinge pins. Elimination of that extra hole increases the durability of RPM arms tremendously.

RPM A-arms are lighter than stock A-arms as well, weighing 2 grams less per A-arm (or 4 grams for the pair). If you’re looking to shed weight or be able to move more weight around to optimal positions, RPM A-arms are the best option.

With unmatched performance, extremely lightweight materials and the ability to lock in your suspension settings even after a wicked wreck, RPM A-arms will get you across the finish line every time!

NOTE: RPM73822 replaces stock Associated ASC92048.

This product was added to our catalog on July 3, 2018

Brenden Moore
Verified Owner
Thursday, Jul 18 2019 (about 5 years ago)
RPM Associated B64/B64D Rear Arms
I've ordered 4 RPM arms for my B64 (one set of fronts, one set of rears), and only 1/4 of the actually had the right pin-hole spacing (the two holes didn't line up properly, causing it to bind). Also the sway-bar mount was to large (also causing more binding). The quality of the plastic is great, but it took me a long time to widen the holes (causing more play, better than binding but still not desirable), and sand down the sway-bar mounts so it moves more smoothly. They're very durable, but for almost 2x the cost I expected better tolerances.