Originally Posted by
ray_munday
If you have switched to the plastic hubs from the B44, you wont need to change the crush tubes.
If you are running the plastic hubs from the original b4 (outer bearing is small) then yes you need a different crush tube as nhraman linked below.
Whichever you are using, if there is a grinding sound, check that the bearings themselves arent damaged and that you have the correct tube installed.
Ray
Thanks Ray! I thought they were from B4 but they are B44's, with big outer bearing. So my tubes are ok, i need to find the source of the sound.