Bought two of those, one arrived broken :( (bad packing by Hobbyking probably, in the bottom of a SP 100 3D BNF set with some other big items). Hopefully the frame will be more durable in real crashes. Unfortunately flat sides of motor mount are in front/back direction in the Solo Pro 100 3D frame, so modification for mounting a brushless motor (cutting frame) will be much more difficult than it is in a Blade mCP x frame (where BL mod is quite easy).