Bosch Frame bushing set, narrow (BDU31YY, BDU34YY, BDU38YY)

Important product information

This frame bushing set is suitable for installing the BDU31YY, BDU34YY and BDU38YY drive units with narrow mount.

These frame bushings may only be fitted with the corresponding bolt set EB1190002F for narrow frame bushings (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.

The following assembly video contains all the important information.

Scope of supply

• 2x frame bushing narrow

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.