CeramicSpeed Rear Derailleur Cage - OSPW Aero | Alpha Disc | for Shimano Dura Ace/Ultegra Di2 (R9250/R8150)

Replacement derailleur cage for OSPW Aero systems from CeramicSpeed that are compatible with the Alpha Disc derailleur pulleys. Version for the electronic Shimano 12-speed rear derailleurs of the Dura Ace (R9250) and Ultegra (R8150) series. Compatibility: shifting system: Shimano Di2 (electronic), 12-speed rear derailleur: Dura Ace RD-R9250 / Ultegra RD-R8150 cassette (max. sprocket size): 36 teeth Scope of supply: 1 rear derailleur cage