Why does my sons' GT BMX bike rear rim malfuntion ?

Efrain P

New member
when my son will pedal his bike, sometimes it will not catch or it will "slip" as if the chain fell off, but it didn't. The rim is a 20" freewheel rim. The hub does not seem to grab and sometime it will !! We can't figure this out !! Please help !!
 
Back
Top