CeramicSpeed OSPW Derailleur Pulley System

The CeramicSpeed OSPW (Oversized Pulley Wheel) system for Shimano Dura-Ace and Ultegra is the ultimate upgrade for cyclists seeking maximum efficiency and performance. This premium cage system replaces standard pulley wheels with significantly larger gears, minimizing chain deflection. Thanks to the extremely low friction of the handmade ceramic bearings, you save valuable wattages during every ride, no matter the weather conditions.

This advanced system is engineered to interface seamlessly with the premium Shimano drivetrains (Dura Ace 9100/9150 and Ultegra 8000/8050). The unique combination of an aerodynamic, lightweight cage and the superior hardness of CeramicSpeed bearings delivers smoother power transfer and a substantially longer lifespan than traditional components. It is the perfect choice for competitive cyclists and demanding enthusiasts looking to reduce mechanical resistance to the absolute minimum.

By integrating the OSPW system, you will experience noticeably more direct and precise shifting under all conditions. The robust design requires minimal maintenance while keeping performance consistently high. Invest in the very technology trusted by professional riders in the peloton and unlock unprecedented mechanical efficiency with every pedal stroke.

Please note: This system is exclusively compatible with the following derailleur models: Dura Ace 9100, Dura Ace 9150 Di2, Ultegra 8000 SS, and Ultegra 8050 SS Di2.