Can use 12speed , But need connect junction n converter to sd300 wire.

•  
• SHIMANO - DI2 Remote Triathlon Shifter - E-TUBE With a refined ergonomic shape and simple, single-button design, the SW-R9160 DI2 remote triathlon shifter provides quick shifting while riding in the aerobars. Utilizing SHIMANO SYNCHRONIZED SHIFT program, each bar end shifter can be programmed to upshift or downshift the rear derailleur while the Di2 computer decides when to shift the front derailleur for the optimal front and rear gear combination. PRODUCT SPECIFICATIONS MODEL NO SW-R9160 SERIES DURA-ACE R9150 Series Average weight 40 ( /pair) Remarks 2 pcs switch in a spec model Switch type Bar-end SW for TT (pair) | Bar-end SW for TT (pair) Position DH Bar | DH Bar Compatible electric wire EW-SD50 | EW-SD50 Firmware update by E-TUBE PROJECT ✔ SD50 port (pcs) 2 SD300 port (pcs) 0 SD50 connector (pcs) 0 SD300 connector (pcs) 0 Connector for SD50 remote sprinter shifter (pcs) 0 | 0 Connector for SD300 satellite shifter (pcs) 0 Port for SD50 remote sprinter shifter (pcs) 0 Port for SD300 satellite shifter (pcs) 0

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