Description
Optional parts for BD7-2015. Is the ultimate resistance reduction and durability, it is ceramic bearing set. The set 15 of bearings used in the drive system. In addition to the reduction and wear resistance of the rolling resistance by ceramic balls, and we have achieved a high durability by special shield. It is just a Although it also suppressed rotation loss by reducing the ball weight, and build the advantage in the race.
Outer diameter
Outer diameter