What The???

[tc3_racer_001]

i only got 2, im thinking that they replaced the original one (was working but snapped shaft) and just added a new rotor (4100kv? not even an option! its crazy...)

then i got this 6800kv... when this settles the 4100 is desinted for 4s. i will convince its owner that it will be a good idea. haha. still under the rpm so i dont see why not!

any other ideas> btw, how much are these worth?