Amazon.com: GoolRC 21T 550 Brushed Motor with Cooling Fan and Motor Mount Base Holder Replacement for 1/10 RC Car Traxxas TRX-4 TRX-6 RC Car : Toys & Games
Traxxas 3975R Titan 550 21T Reverse Direction Motor — White Rose Hobbies
Traxxas Titan 21-Turn 21T 550 Motor 14.4 volts Fan-Cooled For RC 1/10 E-Revo E-Maxx Monster Truck #3975 - AliExpress