The 10-speed, medium-cage CUES Di2 for e-bikes

The CUES Di2 U8050 1x10 kit is the 10-speed version of the CUES electronic drivetrain, for e-bikes running an 11-43T LINKGLIDE cassette. The RD-U8050-GS rear derailleur is powered by the e-bike system through one EW-SD300 wire, and the SW-EN605-R switch on the bars shifts it wirelessly. No cable, no stretch, no re-indexing.

Kit includes

  • SW-EN605-R wireless shift switch, right, three buttons with mode and battery LED, 22.2 mm clamp
  • RD-U8050-GS CUES Di2 rear derailleur, 10-speed, medium cage, SHADOW RD, direct attachment
  • CS-LG400 LINKGLIDE cassette, 10-speed, 11-43T
  • CN-LG500 LINKGLIDE chain with quick link
  • EW-SD300-I electric wire, 1200 mm (1400 or 1600 mm as alternatives), derailleur to drive unit

Options

  • FC-U8000-1 HOLLOWTECH II crankset, 170 or 175 mm, 40 or 42T, for a bike that is not using the motor's crank arms
  • BB-MT501 threaded 68/73 mm bottom bracket
  • BR-U8000 / BL-U8000 hydraulic disc brakes, front and rear
  • RT-MT800 Center Lock rotors, choose the size

The crank, bottom bracket, brakes and rotors start at 0, so an e-bike keeping its own parts is not charged for them. Every other part can be deselected if you already have it.

What it needs

A Shimano STEPS e-bike system with a free EW-SD300 port (EP600 and EP801 take the wire directly), or a Bosch BSE3 system with Shimano's PW-PS300 power supply wire, which we do not stock as a kit part: ask us before you order. The RD-U8050-GS is made for the 11-43T cassette; the 11-48T and 11-50T LINKGLIDE cassettes sit outside its range and are not offered here. Every part is 10-speed LINKGLIDE and works only with other LINKGLIDE parts. Set-up and shift customisation are done in the E-TUBE PROJECT app.

Tune Cycles is Australia's only Authorised Mobile Shimano Service Centre and Shimano STEPS certified. We can supply and fit this kit; fitting is quoted separately when you book.

Every part in this kit is covered by Shimano's standard manufacturer warranty against defects in materials and workmanship. Wear from normal use, incorrect installation or crash damage is not covered. For any warranty claim or support, return the part to Tune Cycles and we will handle it with Shimano.

  • Di2 electronic shifting on the CUES LINKGLIDE platform, 1x10-speed
  • RD-U8050-GS medium-cage rear derailleur, 43T maximum sprocket, 32T total capacity
  • SW-EN605-R wireless three-button switch with AUTO SHIFT / manual mode button and battery LED
  • CS-LG400 LINKGLIDE 11-43T cassette on a standard Shimano HG freehub body
  • CN-LG500 LINKGLIDE chain with quick link
  • Powered by the e-bike: EW-SD300 wire from derailleur to a Shimano STEPS drive unit; Bosch BSE3 with PW-PS300
  • Crank, bottom bracket, brakes and rotors optional and left at 0 by default
  • Set up and customised in the E-TUBE PROJECT app
Specification Details
Series Shimano CUES Di2 U8050
Speeds 1x10 (LINKGLIDE)
Shifting Di2 electronic; SW-EN605-R wireless switch (2 x CR1632)
Rear derailleur RD-U8050-GS, medium cage, SHADOW RD, direct attachment, max sprocket 43T, total capacity 32T
Cassette CS-LG400 LINKGLIDE 10-speed 11-43T (11-13-15-17-20-23-26-30-36-43), Shimano HG freehub
Chain CN-LG500 LINKGLIDE, 126 links, quick link
Power From the e-bike drive unit via EW-SD300 (STEPS EP600 / EP801); Bosch BSE3 via PW-PS300 (not included)
Wire EW-SD300-I 1200 mm default; 1400 / 1600 mm alternatives
Crank Optional: FC-U8000-1 170 / 175 mm, 40 / 42T
Brakes Optional: BR-U8000 / BL-U8000 hydraulic disc, RT-MT800 rotors
Compatibility LINKGLIDE only; not compatible with HYPERGLIDE / HYPERGLIDE+ or mechanical shifting
SKU SHM-U8050-Di2-1x10-GROUP
Brand Shimano

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