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Shimano launches 12-Speed Ultegra R8100 Di2: Wireless Cockpit, Faster Shifting + Improved Brakes - No New Wheel Standards / Freehubs! - Gravel Cyclist: The Gravel Cycling Experience
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Amazon.com : SHIMANO Wireless Unit for Di2 System, EW-WU111, E-Tube Port X2, for 52 Countries : Sports & Outdoors
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