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Shimano's Koryak and Tharsis bars provide internal Di2 cable routing for a clean cockpit setup. The Tharsis Trail Riser is an 800mm wide, low-rise carbon bar. Also included in the Tharsis range is the Expander Headset Adjust System which includes a battery holder for Di2 integration, allowing you to run the battery for your Di2 system in the steerer tube of your fork.