CeramicSpeed OSPW Pulley Wheel Aero Alpha System Shimano 9250/8150 - Coated Races Aluminum Pulley Carbon Cage BLK MFPN=97352007011 Front and rear bumpers for

Front and rear bumpers for durability

Widest cutaway in the Butterfly line up for maximum pressure relief

Ride your bike

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CeramicSpeed OSPW Pulley Wheel Aero Alpha System Shimano 9250/8150 - Coated Races Aluminum Pulley Carbon Cage BLK MFPN=97352007011 Front and rear bumpers forCeramicSpeed OSPW Pulley Wheel Aero Alpha System for Shimano 9250 8150 Coated Races Aluminum Pulley Carbon Cage Black. The CeramicSpeed OSPW Aero ALPHA system for Shimano 9250 8150 derailleurs updates the fastest proven aero derailleur cage to include CeramicSpeeds patent pending ADR bearing protection and quiet performing ALPHA disc with composite tooth profile pulleys. Furthermore a speed defying pinstripe graphic has been added for a splash of