◌CeramicSpeed OSPW System Shimano R9200-R8100The OSPW System Shimano R9200-R8100 from CeramicSpeed is designed and engineered to enhance performance for the Shimano 9200 and R8100 series rear derailleurs. It features an integrated stop tower for simple installation and durability, and it significantly enhances gear shifting performance.The CeramicSpeed Oversized Pulley Wheels System has been proven to be the fastest pulley system in the world. This OSPW System has hand built CeramicSpeed Bearings installed in each pulley and comes with a 4-year warranty as standard and a lifetime warranty when choosing coated bearings. CeramicSpeed OSPW Systems are an industry-leading product, chosen by World Champions and top athletes around the world. Featuring a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimisation of the rear derailleur. The upper and lower oversized aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings. For 8100 derailleurs, the cage uses the factory derailleur body washer. 9200 derailleurs will require the new included derailleur body washer. 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. This OSPW System has hand built CeramicSpeed Bearings installed in each pulley and it comes with a four-year manufacturer’s warranty as standard. Featuring a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimisation of the rear derailleur. The upper and lower oversized aluminium pulley wheels come fitted with standard CeramicSpeed Bearings. Also included in the box is a 15ml dropper bottle of CeramicSpeed Bearing Oil. Technical DataThe overall power savings of the OSPW System for Shimano 9200 reach 30%-60%, or more in some cases, over a stock setup. The oversized pulley wheels have 3-5 times longer lifetime than the commonly used standard pulleys on the market. Maintenance of CeramicSpeed OSPW SystemsRegarding the maintenance of your OSPW System, it is important that you properly lubricate your bearings in order to ensure optimal performance and maximum longevity. Add oil by using the lubrication points on the back cage plate, so that oil can penetrate the bearing. Do this when you lubricate your chain, if you have washed your bike or after riding in wet or muddy conditions. Please note: While there are visual similarities in the 9100 Series OSPW and 9200 Series OSPW, the spring tension settings, rotation stop tower placement, and mounting pin depth are slightly repositioned and as such the systems are not cross-compatible. Features: Pulley Wheel Material: Aluminium Cage Material: Carbon Reinforced PA Bearings: Standard or CeramicSpeed bearings (multiple options in the selection menu) CeramicSpeed Grease/Oil: Pulley Oil (Standard) Use: Road Speed: 12-Speed Compatibility: Shimano Dura Ace 9200 / Ultegra 8100 Cassette Compatibility: Fits 11-30T and 11-34T Shimano 12 speed cassette Spring Tension Settings: 4 spring tension settings In The Box: A complete 13-tooth/19-tooth OSPW System, CeramicSpeed Bearing Oil in 15ml dropper bottleTechnologies: Integrated stop tower for simple installation and durability Lifetime warranty on system cage Trusted design by World Champions and top athletes around the world 13/19 pulley wheel sizes Standard or CeramicSpeed bearings (multiple options in the selection menu) Hand built CeramicSpeed bearings are installed in each pulleyBuy CeramicSpeed Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.