Hey vdeny, thank for the effort. Things I like:
1) Like the realistic looking rider/bicycle (although the winning design doesn't necessarily have to have that);
2) Like the use of the Jamaican flag in the X.
Things I don't like as much:
1) Not crazy about the glossy semi-circle running through the logo. Should probably be flat. Not sure if I'm using the proper vocabulary...
2) Would hope that the font of the B and M could be closer to the "font" of the X while still retaining its flag status
3) The chunk of white in the middle of the tire. No idea how you could change that.