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RPM Front A-arms for the Associated Rival MT8 are designed to improve durability over stock A-arms. How did we do it? First, by increasing the amount of material surrounding the inner hinge pins by 7%. We then increased the width of that thicker diameter by nearly 40%! The amount of material at the outer hinge pins was also improved by 28%! We also increased the width there too, by another 9%.
The support beams on our A-arms also got beefier. At their thickest, stock a-arms are roughly 1/2” (12.7mm) thick, but taper down on both ends. That amounts to a loss of nearly 30% of their thickness at the outer hinge pins. Not with RPM! Our A-arms are a full 1/2” (12.7mm) over nearly their entire length! We only taper them slightly at the inner hinge pins (.45” or 11.43mm at their narrowest) to match the maximum size allowable of the inner hinge pin bosses. To compensate for that slight taper, we use four massive support beams instead of two, making RPM MT8 A-arms the toughest alternative to stock available!
All RPM A-arms are molded in black and blue from our nearly indestructible blend of engineering grade nylons for performance you can trust.
Tech Notes: RPM Associated Rival MT8 Front A-arms are sold in pairs. Our A-arms replace the front A-arms from stock Associated #25911.
