Bidproduct C50 9XL.
The only difference in terms of looks between this clone and a real Hacker C50 XL motor are the absense of 5 screws that hold on the front endbell, and the colored wires. This motor uses a screwed on front endbell like the finned feigao motors. No biggie, just have a tube of loctite of JB weld handy :)
The red motor is my toasted HobbyCity 9XL for comparison.
I will give this thing a thorough workout when the weather clears up, and we'll see if its worth the $50 I paid for it, compared to a $350 true Hacker.
A real Hacker C50.