The Shimano EW-SD300-I is a 600mm Di2 E-Tube electric wire for internally routed builds. It carries power and shift signals between Di2 components using the SD300 connector, and the "-I" version is supplied with wire holders (tie-wraps) to keep the cable tidy inside the frame and handlebars. The wire cannot be cut or shortened.

Fits

  • Shimano Di2 components with the SD300 connector (12-speed Dura-Ace, Ultegra, GRX and 105 Di2)
  • Shimano STEPS / E-Tube systems using the SD300 connection
  • Requires the TL-EW300 connector tool for installation (the older TL-EW02 is not compatible)
Covered by Shimano's spare-parts warranty against manufacturing defects. For any warranty claim or support, return the item to Tune Cycles.
  • 600mm Di2 E-Tube electric wire (power and signal)
  • SD300 compact, waterproof connector
  • "-I" version for internal routing, supplied with wire holders / tie-wraps
  • Fits 12-speed Di2 (Dura-Ace, Ultegra, GRX, 105 Di2) and STEPS with SD300 connection
  • Requires TL-EW300 tool; cannot be cut or shortened
Part numberEW-SD300-I (600mm)
TypeDi2 E-Tube electric wire, internal routing
Length600mm
ConnectorSD300
FitsShimano Di2 / STEPS components with SD300 connection
IncludedWire holders / tie-wraps
Installation toolTL-EW300 (sold separately)
SKU SHM-IEWSD300IL060
Barcode # 4550170635237
Brand Shimano

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