Someone please let me know the difference.

I hear its axle size.

I tried to search but couldnt find it

 

The mounting for the rotors arent the same between the wheels either. this means if you were convertinf F4i to 929, you would need 929 forks, maybe tripple tree, 929 brakes, rotors, 929 axle, wheel spacers. etc.. its not as easy as just swaping a rim as it sounds

 

Yeah i have the whole front end, I just had my sponsor chrome an f4i rim for a bike wiht a 929 front end ooops

 

mikey if ya want i have a 929 rim laying around it has a bent lip but it still holds air and has a tire on it. you can have it if you want. pm me if your interested.