The Shimano EW-AD305 Conversion Adapter makes it easy to connect different generations of Shimano Di2 wiring. Designed to link an EW-SD300 E-TUBE wire to an older EW-SD50 E-TUBE wire, this small but essential component helps riders upgrade or customize their electronic drivetrain without replacing every cable. Its a clean, simple solution for blending new and existing Di2 parts in one system.

This adapter is fully compatible with Shimanos EP8 and EP800 series drivetrains, ensuring smooth communication across components. Whether youre updating to newer gear or maintaining a trusted setup, the EW-AD305 helps make the connection effortless and reliable.

Key Features:

• Wire Compatibility – Connects EW-SD300 and EW-SD50 Di2 wires in a single system.

• Easy Integration – A compact solution for mixing older and newer Shimano Di2 components.

• EP8 Series Ready – Fully compatible with Shimano EP8 and EP800 series drivetrains.