5x Diff Differential Main Gear 64T Motor Pinion 17T 21T 26T 29T for 11164 RC Car. Teeth: 16T 17T 18T 19T 20T. RC Car Simulation Sound Effect 22.05kHz For 1/28 1/24 1/18 RC Crawler Trucks. 20T: 11.6mm.
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