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Designed specifically for cyclists who demand the best
Antibacterial & pH Neutral: With its antibacterial properties and pH-neutral soaps
held magnetically for secure and reliable use
and less wear and tear on your chain
Shimano Dura-Ace RD-R9250 12-Speed Di2 Rear Derailleur Electrolyte Tablets Easy-to-Follow DirectionsShimano Dura Ace RD R9250 12 Speed Di2 Rear Derailleur Unleash the power of cutting edge technology with the Shimano Dura Ace RD R9250 12 Speed Di2 Rear Derailleur. Designed for professional cyclists and serious enthusiasts, this rear derailleur delivers the fastest and most precise shifting performance in Shimano's history. Key Features: Lightning Fast Shifting: Experience the quickest gear changes yet, thanks to advanced Di2 technology. Whether