Ceramicspeed ospw rs 5-spoke derailleur pulley system for shimano r9250 r8150

Product Description Specifications:Application:Road, Triathlon & Time TrialGearing:12-speedCassette Teeth (max.):34-toothCompatibility:Shimano Dura-Ace Di2 RD-R9250, Ultegra Di2 RD-R8150Technical Information:Derailleur Pulleys:13 tooth (upper derailleur pulley), 19 tooth (lower derailleur pulley)Outer Cage Material:polyamideInner Cage Material:polyamideOther Materials:aluminium, compositeBearings:CeramicFeatures:oversize derailleur pulley system with ceramic bearings for Shimano Dura-Ace Di2 RD-R9250 and Ultegra Di2 RD-R8150Further Drive technology to improve and extend performance in road usehigh-performance bearings with very hard, above-average supple and resilient ceramic balls made of grade-3 silicon nitride (best achievable grade for ceramic bearings)compatible with 10-34 12-speed cassetteshandmade in Denmark For hazard warnings, safety and application information, please see CeramicSpeed Oil for Derailleur Pulleys. Technology:Ceramic Bearings by CeramicSpeed CeramicSpeed ceramic balls are rounder, harder, smoother, lighter and more resilient than steel balls and ceramic balls from other manufacturers. CeramicSpeed ceramic bearings therefore last 3 to 5 times longer than other bearings on the market. All CeramicSpeed bearings are handmade in Denmark under clean room conditions and subjected to a strict four-stage inspection process. Among other things, the size of the ceramic balls is checked down to the thousandth of a millimetre. Tests are then carried out in the laboratory or preferably by professionals in training and competition. CeramicSpeed bearings guarantee the lowest possible friction, optimised power transfer and maximum durability and also help you save watts and reach the finish line faster. It's not about seconds, it's about minutes! OSPW The Oversized Pulley Wheel System (OSPW system) is a breakthrough innovation from CeramicSpeed, developed in collaboration with world-class triathletes. This unique system is known for 40 - 60% less friction compared to standard derailleur pulleys and allows power savings of at least 1.6 and up to 2.4 watts. The OSPW system features the unique CeramicSpeed bearings, aluminium derailleur pulleys and a polyamide-carbon cage, making it 3 to 5 times more durable than standard systems on the market. Further Drive CeramicSpeed derailleur pulley systems with Further Drive technology are designed to make your drivetrain more durable and less sensitive to wear so that it works efficiently over a long period of time. This means you can still fully rely on it at the end of the race or late in the season. Further Drive includes a completely revised cage structure of the OSPW system with greater material thickness, but without unnecessary weight. ADR and ALPHA Disc are also central components of the Further Drive concept. Note from the manufacturer:Before transporting the bicycle in a travel bag, the rear derailleur should be completely disassembled, otherwise the OSPW system could be damaged. Manufacturer Numbers:black:113486blue:113489gold:113488red:113487Contents:1 x 1 x CeramicSpeed oil, 15 ml dropper bottle Weight: black | 13 teeth (guide pulley), 19 teeth (tension pulley): 85 g Manufacturer: CeramicSpeed Sport A/S Noergaardsvej 3 7500 Holstebro Denmark info@ceramicspeed.com