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RPM rear A-arms for the Associated MT8, in black, built to outlast the stock arms. The inner hinge pin area carries 7% more material, and that thicker section is nearly 40% wider. The outer hinge pin area gets 28% more material and 9% more width. The support beams are heavier too. Stock arms are roughly 1/2 in (12.7mm) thick at their deepest but taper toward both ends, losing nearly 30% of their thickness at the outer pins. RPM arms stay a full 1/2 in (12.7mm) thick over nearly their whole length, tapering only slightly at the inner pins to 0.45 in (11.43mm) at the narrowest to fit the inner hinge pin bosses. Four support beams replace the usual two. Molded from an engineering-grade nylon blend.
