Bosch main motor bearing with fitting tool

This tool will ensure that your new main motor bearing will be fitted without damage. The main motor bearing fitted within the Bosch Gen 2 motor is a large bearing with extremely small ball bearings within it. These ball bearings can be very easily damaged when this bearing is fitted. The main motor bearing tool can be used to press the bearing into the motor cover and then support the bearing while the sprocket carrier/boss is pressed into the bearing.

Kit includes every bearing required for the motor gear and drive train. Includes two crankshaft O-rings and drive sprocket O-ring.

Don’t forget to order genuine Bosch motor grease, and main motor bearing seal or MudStop and crank seal separately if required.

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Genuine Bosch service / repair kit + Left-hand crankshaft bearing, freewheel gear bearing, both transfer gear bearings, left-hand crankshaft O-ring and sprocket carrier O-ring

Many of the motors we work on have suffered water damage to the other bearings used in the drive unit. We have now added these bearings and components to service the left-hand side of the motor too. This ensures you have everything you need to do the whole job properly.

We can fit this kit and bearings for you, and offer our own 12 month Performance Line Bearings parts and labour warranty. Fitting cost £104.50 + p&p

Sadly, like Bosch, we can’t offer any warranty if you fit these parts yourself.

Some common examples:

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Genuine Bosch service / repair kit. This part is available for you to buy and fit yourself, or we can fit it for you.

If your bike is out of warranty this is the Bosch solution to bearing failure. We are a Bosch service partner and can honour the 12 month warranty. Fitting cost £21.00 + p&p

Bosch can’t offer any warranty if you fit this part yourself.

The Bosch service kit + is a kit that covers all motor bearings and all plastic gears.

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Kit contains: Main motor bearing, left-hand and right-hand crankshaft bearings to fit the Bosch Gen 2 Active Line, Performance Line and Performance Line CX
Don’t forget to order genuine Bosch motor grease, and main motor bearing seal or MudStop and crank seal separately if required.

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring).

Bosch Active Line, Performance Line & Performance Line CX main motor bearing.

We only use high quality bearings and ensure they have labyrinth seals for extra protection from water ingress.

DO NOT fit bearings with “MAX” designation, these bearings are designed as pivot bearings and not as a rolling bearing. They will fail prematurely in a motor application.

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

This bearing, has been specially manufactured to fit the Bosch Active / Performance Line / CX crankshaft.

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Will replace Bosch Active / Performance Line / CX left-hand crankshaft bearing.

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Fits Bosch Active Line, Performance Line and Performance Line CX motors.

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Fits Bosch Active Line, Performance Line and Performance Line CX motors

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Fits Bosch Active Line, Performance Line and Performance Line CX motors

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

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