Yeah its the 4300kv finned can also so its the 380 size but yeah 50mm long.
I would like to try a proper 540 size one to see if would be any better and run cooler but will see when i can get my hands on one to try it out.
The HSP buggy without wheels, esc and motor is 1.750kg compared to the Caster pro nitro buggy i have converted is 2.010kg so there is 250grms between them.