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The 360¡ head belt ensures that there are no pressure points on the skull and its easy to use vertical adjustment leaves you with an individual fit
AMOUNT OF ENERGY
DURA-ACE proven 4-arm design: Same stiffness and lighter weight
The result is fast
Shimano Dura-Ace Di2 RD-R9250 12 Speed Rear Derailleur PDL The 360¡ head belt ensuresThe Shimano Dura Ace Di2 RD R9250 12 Speed Rear Derailleur represents the pinnacle of electronic road shifting. Developed for WorldTour racing and engineered for uncompromising performance, the RD R9250 delivers Shimanos fastest, most precise rear shifting ever. Featuring a semi wireless Di2 design, integrated wireless connectivity and intelligent system management, it provides lightning fast gear changes under full load while maintaining the
