The Works Revolution - high performance bearing kit - 26 pieces (Associated B6/B6D)
TheWorks* bearing kit by Avid RC for the Team Associated RC10 B6 / B6D.
*TheWorks kit combines the bearings from both car kits (including 4 gear transmission) so that you have everything you need no matter what transmission you use.
Recommendations
Racers: Racing at multiple tracks where you switch between the ball and gear diff or from the 3 gear transmission to the 4 gear.