DJI VS DIY

[High Flyer_10]

What is the differences between the dji 450 and 550 flamewheel vs DIY 450 and 550 models?

 

[With The Birds]

What is the differences between the dji 450 and 550 flamewheel vs DIY 450 and 550 models?

With respect to DIY the 450 and 550 denotes the distance between the motors. ESC, Motors, flight controller etc are all your choice.

 

[High Flyer_10]

Those parts are upgradeable though right?