With the Ultegra DI2 group, electric shifting is at your fingertips. The BTR1 is a high-performance 7.2 volt Lithium-Ion battery pack to power the Ultegra DI2 system. It holds a charge for at least 1,250 miles (2,000 kilometers) - weeks, or even months of riding for most athletes.
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New for 2011. Durable. Serviceable. Lightweight. Fits 68/73mm
bottom bracket shells English threaded Engineered for trail riders that want a high performance BB that lasts. Custom 6805 16 ball retainer bearings with Titanium coated races that ensure unparalleled corrosion resistance. ...
Shimano ST-R785 Shift/Brake Levers Bringing forth an impressive
display of beauty and function melded into one, Shimano has ventured out to set the standard in high performance road and cyclocross hydraulic brake and shifting systems by combining the best of ...
Shimano Di2 SW-R610 Sprinter Shifters In true Ultegra
fashion, the 6870 series takes the pro tested Di2 technology from its steeper Dura-Ace big brother, to a price that non-pros can sink their teeth into. Di2 electronic shifting enables a whole ...