Bosch

Drive Unit Bushing Kit, Wide (BDU31YY, BDU34YY, BDU38YY) - The smart system

Bosch Drive Unit Bushing Kit, Wide (BDU31YY, BDU34YY, BDU38YY) - The smart system is a direct-fit hardware kit used to correctly mount compatible Bosch drive units to the frame interface. Replacing worn or missing bushings helps keep the motor seated as intended, reducing the chance of mounting play and protecting long-term alignment of the drive unit within the bike’s motor cradle.

• Wide bushing spec - Correct spacing at the motor mount interface for frames and drive units designed around the wide bushing configuration
• Smart System compatibility - Intended for applicable Bosch drive units including BDU31YY, BDU34YY, and BDU38YY
• Service-ready replacement hardware - A practical solution for drivetrain service, motor swaps, or resolving worn mounting interfaces without improvising parts
• Helps maintain secure fit - Supports proper motor seating to minimize movement at the mount and preserve consistent alignment