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Ceramic Bearings: CADEX R1-C30 hubs with ceramic bearings provide ultra-smooth
Compatible with EnergyPak Smart 400/500/625/750/800 systems
the Defy Advanced Elite is ready to help you go fast
and charge down aggressive terrain
BlackChili compound for low rolling resistance and great grip
Shimano SM-JC41 Junction Unit fitness Ceramic Bearings: CADEX R1-C30 hubsKeep your Di2 system running seamlessly with the Shimano SM JC41 Internal Junction Unit, the hidden hub that brings your entire electronic drivetrain together. Designed for internal cable routing, this compact junction boxcommonly referred to as Junction Bacts as the central connection point for all key components, ensuring fast, reliable communication across your setup. Whether youre building a clean new bike or upgrading an existing Di2 system, the
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