Bosch Drive unit bolt set for frame bushings, wide (BDU31YY, BDU34YY, BDU38YY)

Important product information

This bolt set is suitable for installing the BDU31YY, BDU34YY and BDU38YY drive units with wide mount.

These bolts may only be fitted with the corresponding frame bushing set EB1190002J (BDU31YY, BDU34YY, BDU38YY).

Since August 2025, there has been a new mounting concept for the BDU31YY (narrow variant, or wide variant including adaptor), BDU34YY and BDU38YY drive units.

The frame sleeves used so far are being replaced by frame bushings. The frame bushings and associated bolts are backwards compatible with the drive units that were still installed with frame sleeves. The adaptor remains unchanged.

It's important to know that for the wide version of the Performance Line SX up to MY26 EB1110000X (BDU3143) / EB1110000Y (BDU3145), you should still use the screws from the old mounting solution (EB11900011) together with the new frame bushings (EB1190002H).

The following assembly video contains all the important information.

Scope of supply

• 1x screw M8X1X68,7
• 1x screw M8X1X75,5

Technical data

• Model year: MY2026
• System: The smart system

UK authorised Bosch eBike retailer and service centre

We are an authorised Bosch eBike retailer and service centre in the UK. This product is supplied with the applicable Bosch manufacturer's guarantee, subject to Bosch's guarantee terms and conditions. Please retain your proof of purchase.