Factory balanced replacement armature with .490" stack, 60 turn/28 gauge wire. The armature has been professionally trued and balanced by PROFORMANCE Racing for smoothness, performance and reliability. This is our best Super 16D Replacement Arm, great for use with Motor Setups #499IX and #502I. Timing is factory set at 25-30 degrees. Fits all Super 16D and Super 16D Rotor Motors.
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