• Electric Wire Shimano EW-SD300 Di2 Internal

SHIMANO

Electric Wire Shimano EW-SD300 Di2 Internal

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Electric Wire Shimano EW-SD300 Di2 Internal

Electric Wire Shimano EW-SD300 Di2 Internal

The Shimano EW-SD300 is a next-generation Di2 electric wire designed for internal routing, delivering reliable signal transmission and power to all E-TUBE system components. Its slim and compact design makes it ideal for modern bikes with clean, integrated cable setups.

Featuring the updated SD300 connection standard, it enables smaller and lighter electronic components while supporting Shimano 12-speed Di2 systems. The “plug & gap” connection ensures easy installation and secure, waterproof connectivity.

Available in multiple lengths, the EW-SD300 wire is suitable for road and urban bikes alike. Its waterproof construction guarantees durability and consistent performance even in demanding conditions.

  • Model: EW-SD300-I
  • Routing: internal
  • Number of plugs: 2
  • Cable diameter: 2.4 mm
  • Plug diameter: 3.45 mm
  • Type: SD300 E-Tube
  • Compatibility: Dura-Ace, Ultegra, 105 Di2
  • Compatibility: Alfine, Nexus Di2

The Shimano EW-SD300 provides stable and efficient data transmission, making it a key component of modern Di2 systems.

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Shimano is a Japanese component manufacturer that since 1921 has been one of the world’s largest suppliers of bicycle drivetrains, brakes and cycling-specific parts. Shimano groupsets — from Tourney for city bikes to top-tier Dura-Ace — are found on virtually every serious bike brand. The company also makes fishing tackle and rowing components.