This is the high-end model from the budget line of RacerStar motors from BangGood.
BangGood has recently pushed out an extensive new line of budget motors, covering a range of performance and price points, as well as styles and colors. They sent over a couple of the higher end motors for met to test, inculding this specimen. Looking at this motor it is immediately obvious that this is an OEM version of the DYS SE2205 Plus (the PCB version). The build quality is identical to the DYS version. One interesting note here is that this "hollow shaft" version doesn't apppear to be fully hollow like the original DYS SE2205 was. As with a few other motors I've seen out of DYS over the last few months, the hollow part of the top of the shaft doesn't extend down past about 6-7mm. Other than that there are no major difference between the DYS and this motor that I could tell, though I haven't tested the PCB version of the SE motor. Overall the quality of this motor is high. Solid construction, bearings are smooth with no vertical play windings are very neat. The durability of the SE line has already been proven, so this motor should be the same. My only complaint is that at 30g, it is a bit on the heavy side for a 2205 motor. Otherwise it is a very solid motor.
Now on to the bench results!
Given the physical similarities to the DYS SE, I was curious to see if the magnets or any other internal components that might impact pefromance had been changed for this itteration of the motor. The good news is, this seems to be pretty much identical in performance to the other N52 class 2205 motors. Solid performance across the board, hitting very similar numbers to the Emax RS series, and it's DYS sibling. Nothing really surprising here, but good solid performance. This motor is definitely on par with what have been the top performing motors over the last few months, though the newer generation of 2205 motors seem to be setting an even higher standard of performance.