Ceramicspeed Ospw Aero Carbon 11s Shimano 8000/9100 Coated Jockey Wheel System Black

The CeramicSpeed OSPW Aero Pulley Wheel for Shimano Dura-Ace 9100 and Ultegra 8000 is wind tunnel tested to have 40% less friction compared to a stock derailleur, making it perfect for time trials or triathlons. The OSPW Aero is an industry leading product co-developed with one of the world's leading aerodynamicists; Simon Smart and is chosen by World Champions and top athletes around the world. This OSPW system is fitted with handmade CeramicSpeed bearings and its unique, handcrafted design will captivate you from the first time you use it. The system features a 13-tooth upper Pulley Wheel and a 19-tooth lower Pulley Wheel to provide absolute rear derailleur optimisation and the oversized aluminium upper and lower Pulley Wheels come equipped with coated CeramicSpeed Bearings that have been perfected through years of experience.The OSPW Aero for Shimano 9100 and 8000 has an integrated stop tower for easy mounting.