CeramicSpeed OSPW System Shimano 9000-6800 The OSPW System Shimano 9000-6800 from CeramicSpeed offers extended durability and enhanced gear shifting smoothness and accuracy. Ideal for road racing, it features a carbon cage with high-quality aluminium pulley wheels and industry-leading bearings.CeramicSpeed OSPW System Shimano 9000-6800 will add a competitive edge to your riding with smoother gear changes, watts saved and envy to all who see your bike. Developed and designed entirely by CeramicSpeed, the Oversized Pulley Wheel (OSPW) System for Shimano 9000-6800 provides the ultimate optimization of your bicycle’s drivetrain. This OSPW System features a set of 17-tooth aluminium Pulley Wheels housed in a specially designed polyamide (PA) and carbon cage. The upper and lower 17-tooth oversized aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings. The Oversized Pulley Wheel (OSPW) System is the product of choice by many of the world’s leading cycling teams and triathletes. Compatible with Ultegra 6700/6770/6800/6870 mechanical and Di2 rear derailleurs and Dura-Ace 7900/7970/9000/9070 mechanical and Di2 rear derailleurs. The cage is made from carbon fibre and reinforced PA while the 17-tooth pulley wheels are made from aluminium and mounted with high-quality CeramicSpeed bearings. The revolutionary OSPW System is mounted with CeramicSpeed coated bearings, which means it has undergone a special coating treatment to provide even more protection and lower friction. A very thin protective coating is applied to the bearing races, which further increases the resistance to corrosion or damage from foreign objects. The OSPW has been tested and confirmed to be the world’s fastest pulley wheel system, therefore enhancing your performance with free speed, which gives you a more efficient drivetrain. Since its introduction in 2015, the CeramicSpeed Oversized Pulley Wheel System has been through 13 unique derailleur compatibility developments. No other pulley system has the depth of use and trust as the CeramicSpeed OSPW, which counts both Men’s and Women’s Triathlon World Champions, World Tour professional road teams, XCO professional MTB Teams, and elite athletes worldwide as its users. MaintenanceIt’s important that you properly lubricate your bearings in order to ensure optimal performance and maximum longevity. Add oil to the outside of the bearing seal, so that oil can penetrate the bearing. Do this when you lubricate your chain, or if you have washed your bike or have been riding in wet or muddy conditions. This revolutionary OSPW System is developed, produced and assembled by hand in Denmark. This plug-and-play product is the result of an in-depth development process and has been designed for optimal performance. Created to answer the need for less friction (as much as 60%), increased speed and a more efficient drivetrain. This OSPW System helps you ride any distance comfortably. The optimisation of your drivetrain with the new CeramicSpeed OSPW System delivers access to industry-leading efficiency. The use of high-quality materials means this system will outlast other commonly used pulley wheels on the market. Features: Material: Carbon/PA Cage, Aluminium Pulley Wheels Compatibility: Shimano Dura-Ace 9000 / Ultegra 6800 Drivetrain Speed: 10/11-Speed A complete 17-tooth OSPW System CeramicSpeed bearing oil in 15ml dropper bottle Weight: 57gBuy CeramicSpeed Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.