Here's a video showing the size and application for several different sized Brushless Motors. In the video I show a Generic 540 sized Motor, a Tekin Pro4HD 550 sized, a Tekin T8 Gen 2 4030 Buggy Sized and a Tekin T8 Gen 2 4038 Sized Truggy motor.

Want to check out these motors and more?

https://bit.ly/2R0zb0a