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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 light weight materials and the ability to lock in your suspension settings ev
