CeramicSpeed OSPW Aero ALPHA, Shimano 9250/8150, Black

Description

Updates the fastest proven aero derailleur cage to include patent pending ADR bearing protection and quiet performing ALPHA disc with composite tooth profile pulleys. Pinstripe graphic has been added for a splash of visual motion. OSPW Aero ALPHA cages have been updated to accommodate the ADR equipped ALPHA disc pulleys. Reduces aerodynamic drag on the rear derailleur by up to 60%. Reduces friction by 35-40% over stock pulley configuration. Structural aerodynamic cage design. Pulleys, cages, and bearings all produced and assembled by hand in Denmark. ALPHA Disc pulleys with composite teeth for quiet performance and ADR bearing protection. It is not possible to add these pulleys to a previous generation OSPW Aero cage