Shimano Di2 EW-SD50 E-Tube Electric Wire 250mm for Bike Shifters

Shimano E-Tube Wiring System for Ultegra Di2 Electric Bikes

Upgrade your electric bike’s precision shifting with Shimano’s E-Tube Wiring System, engineered exclusively for Ultegra Di2 components (models prior to 7970). This 250mm cable set features a proprietary two-prong connector design that ensures secure signal transmission between shifters and derailleurs—ideal for riders prioritizing reliability in variable terrain or weather conditions.

Key Advantages
– E-Tube Technology Integration: Optimized for internal frame routing or external use without signal interference;
– Model-Specific Compatibility: Works seamlessly with Shimano Ultegra Di2 systems (2018–2023), but not interchangeable with Dura-Ace 7970 wiring;
– Flexible Installation: Pre-insulated connectors reduce installation time by 30% compared to standard wiring kits;
– Durability: Reinforced nylon sheathing withstands UV exposure and mechanical stress for up to 50,000 km of riding.

Perfect For
– DIY enthusiasts building custom e-bike frames;
– Mechanics replacing worn internal wiring harnesses;
– Racers seeking ultra-low latency shift response during competitions.

⚠️ Important Note: Frame grommet kits (sold separately) are required for smooth installation through most modern bicycle frames—check compatibility using your frame’s serial number prefix (e.g., SHIMANO-FG-XXXX).

This professional-grade wiring solution maintains Shimano’s renowned +/-1mm shift accuracy while simplifying upgrades for existing Di2 users. Always verify frame grommet requirements before purchase to ensure proper installation alignment and strain relief.