What are the Shimano EW-SD50-I Di2 wire holders for?

The EW-SD50-I wire holders are Shimano's internal routing guides for EW-SD50 Di2 E-Tube wires, sold in a pack of 20. These small plastic clips attach to the inside of frame tubes to keep Di2 wiring organized, prevent rattling, and protect wires from chafing against frame walls during riding. Proper internal wire management is essential for clean Di2 builds and prevents premature wire failure from repeated movement and abrasion inside the frame. Sold as a pack of 20 holders, enough for a complete wiring installation with spares.

Compatible with Shimano EW-SD50 Di2 E-Tube wires. Pack of 20. Used for internal routing cable management only.