Technically, the TC motor is 4274. There's alot of confusion I think reagarding motor diameters swirling around.. in general, the only actual difference between say a 4074 and 4274 size motor is one has cooling ribs machined into the outside of the motor can(4274) and the other does not(4074) these ribs are about 1mm tall.Thanks for the reply. I see where the stock motor in the rtr is a 4075. Do you happen to know how much room (length and diameter) in the roller for the motor to fit? I would hate to buy a motor that is too large to fit. Thanks
Some companies, such as Surpass often list a motor as 4082 like I screen shot above even though it measures out at 42mm.. why? No idea..maybe lost in translation from chinese to english