Bosch Gen 2 Elite Bearing Kit. 

This full bearing kit contains all of the bearings you need in order to rebuild your Performance Line motor. It is also suitable for the lower tier motors if only the best will suffice! 
This is a fit and forget set, the bearings are of the highest quality and we use them in our own bikes and are running in motors with over 23,000 kms on the teller! 

You will need a press to replace lots of these bearings in your motor, you cannot knock them out with a drift.