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RPM A-arms for the B64 and B64D address two problems. Hinge pin slop in stock arms can make suspension settings wander, with as much as 0.003 inch (.076mm) of clearance found in new stock hinge pin holes. RPM holds its holes to 0.0005 to 0.001 inch (.013 to .025mm), nearly 300% tighter. Stock arms also break easily, and RPM customers have said so again and again. These are built to survive rough landings and contact, whether you are bashing or racing. In-line screws hold the outer hinge pins, which removes an extra hole that weakened the arm. They are lighter too, at 2 grams less per arm or 4 grams per pair, so you can shed weight or move it around. The tight tolerances help your suspension settings stay locked in. FITS: Associated RC-10 B64 4WD and RC-10 B64D 4WD buggy.
