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Constructed from high-quality aluminum
Articulated cuff - Better coverage for layering and ease of taking on and off
allowing cyclists to transport their mountain bikes to events or training camps with peace of mind
Set up only the modes you need
Shimano DURA-ACE Di2 Rear Derailleur 12-Speed RD-R9250 bikes Constructed from high-quality aluminumThe Shimano Dura Ace RD R9250 Di2 Rear Derailleur delivers the fastest and most precise shifting in the 12 speed lineup. This medium cage component features carbon fiber construction to keep the weight at a mere 136 grams for elite racing performance. This black Di2 derailleur provides seamless electronic gear changes for adult road cyclists. Its refined design ensures reliable operation and a clean look for high end builds using the latest Shimano
