Early Brose C, T, TF motors had no seal covering the right hand crankshaft bearing. This seal is extremely effective at stopping water and dirt entering the bearing and ultimately the motor.

This is also a direct replacement if your Brose S or S-Mag seal is missing, worn or damaged. (For 1.2, 1.3, 2.1 and 2.2 motors)

Once the seal has been fitted over the sprocket carrier it will be pushed down when the chainring spider is re-fitted.

This gasket will fit Brose S-Mag 2.1 & 2.2 and fits between the motor and the drive belt cover.

This is a genuine Bosch lockring tool to remove the castellated nut or threaded chain guard from the front sprocket of a Bosch Classic motor. Cheaper alternative to the genuine Bosch tool

Generation 1 (Gen 1) covers Classic Line and Classic Line +. These motors have a large sprocket and look like the motor Below.

 

 

This bearing is for the original Bosch “Classic” and has a bespoke internal diameter.

Bosch Generation 1 “Classic”

bosch classic

This is one of the best sealed bearings we could find for this application.

Bosch generation 1 “Classic”

 

Bearing kit to replace all drive train bearings on the Bosch Gen 1 “Classic”

Bosch Generation 1 “Classic”

Bosch Gen 1 motor drive gear clutch bearing.

Bosch generation 1 “Classic”

This bearing is for the original Bosch “Classic” and has a bespoke internal diameter.

Bosch Generation 1 “Classic”

This is a genuine Bosch lockring tool to remove the castellated nut or threaded chain guard from the front sprocket of a Bosch Gen 2 motor.

Generation 2 (Gen 2) covers Active Line and Performance Line from 2014 to 2018 and Performance Line CX from 2017 to 2019. These motors have a small sprocket and look like the motor Below.

 

 

IceToolz lockring tool to remove the castellated nut or threaded chain guard from the front sprocket of a Bosch Gen 2 motor. Cheaper alternative to the genuine Bosch tool

Generation 2 (Gen 2) covers Active Line and Performance Line from 2014 to 2018 and Performance Line CX from 2017 to 2019. These motors have a small sprocket and look like the motor Below.

 

 

This is one of the two circlips visible on either side of the crankshaft. They are 19.5mm internal diameter and 2mm thick, fitted to the Bosch Gen 2 motor.

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)

Bosch Active Line, Active Line Plus and Performance Line Gen 3 BDU3xx Armature support bearing left hand side.

Bosch Generation 3 motor BDU3xx (NOTE: Large chainring)

Bosch Active Line, Active Line Plus and Performance Line Gen 3 BDU3xx Armature support bearing right hand side.

Bosch Generation 3 motor BDU3xx (NOTE: Large chainring)

Bosch green “tacky” seal grease and bearing cover for the right hand crankshaft bearing on early Gen 3 motors: Active Line, Active Line Plus and Performance Line motors. Suitable for all BDU3XX drive units up to serial number 859302XXX

Bosch green “tacky” seal grease and bearing cover for the right hand crankshaft bearing on early Gen 3 motors: Active Line, Active Line Plus and Performance Line motors. Suitable for all BDU3XX drive units from serial number 860011XX

Small O-ring to fit the left hand side of the Bosch Gen 3 crankshaft.

Bosch Generation 3 motor BDU3xx (NOTE: Large chainring)

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