The oversized Pulley Wheel System for Shimano Dura Ace 9100 / Ultegra 8000, developed, designed and manufactured entirely by CeramicSpeed in Denmark, is a technological advance for the bicycle industry. The OSPW system for Shimano rear derailleurs is compatible up to a cassette format of 28 teeth.
The total power saving of the OSPW system for SRAM is 40% - 60%, in some cases more. The oversized shift rollers have a 3-5 times longer service life than the standard rollers on the market.
The OSPW system combines the highest quality materials with a unique design and offers lower friction and longer life, improving your competitive advantage. Thanks to the OSPW system for the Shimano rear derailleurs, the power savings start at 40% and the CeramicSpeed bearings inside guarantee three to five times longer life compared to standard rollers on the market. The wattage saving with a CeramicSpeed OSPW system for Shimano Dura Ace / Ultegra starts at 2.4 watts.