Originally Posted by
Jmuck69
What ballcups for the B4.1 would provide tighter tolerances. Just seems to be too much slop with the stock units. I have seen pics of Kinwald running the Losi grey extra rigid ballcups. Would RPM be tighter?
I use the grey losi , Seen the RPM's being use by some of the Team drivers as well...
Most use the losi for strength more than their fit or weight