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The CeramicSpeed OSPW Aero ALPHA system for Shimano 9250/8150 derailleurs updates the fastest proven aero derailleur cage to include CeramicSpeed's 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 visual motion.
| Largest Cog | 34 |
| Fits Model | Ultegra 8150 |
| Fits Brand | Shimano |
| Drivetrain Speeds | 12 |
| Defined Color | Black |