i have a 20 kent bmx bike. The bearings in the frame got messed up some how and now the pedal crank moves back and forth. Can I get these the bearings or do I have to get a new frame?
You are looking for bottom bracket bearings to fit a 1 piece crank... not pedal bearings. These are standard size and readily available HOWEVER since I assume they failed while you were riding the bearing cups should be replaced as well. This takes less than 15 minutes by an experienced mechanic. In summary, you need 2 bottom bracket bearings and 2 bearing cups for a 1 piece crank (and someone to install them correctly).
Count the number of bearings you need and take them to the local bike shop and get a whole set, don't mix the old and new ones use all new.
