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Oversized Pulley Wheel System
Dropping drivetrain drag improves the performance of your road bike and it doesn't matter if it's a lightweight climbing bike or an aero TT speedster. So, if you want to go faster with fewer watts required to do so, upgrade your derailleur with the Coated Oversized Pulley Wheel System from CeramicSpeed and enjoy a ride that’s faster by ridding your drivetrain of frictional drag.
It’s harder to quantify frictional losses compared to say, aero data in the wind tunnel or grams on a scale, but there's a reason why you see these setups of the bikes on the pros as they appreciate saving some wattage expenditure, and the coated ceramic bearings and the large diameter derailleur pulleys offer a one-two punch against drag. On many of the GC leader's bikes, and even more prevalent on those important TT stages, you'll find CeramicSpeed's pulley wheels and cages, whether that’s sponsor correct or not, as they know that going as fast as they can depend upon it. Now, you too can enjoy the same benefits the pros count on in training and racing when reducing drivetrain friction to a minimum is required.
The remarkable cage and pulley systems are developed and hand assembled in Denmark. The products are all tested in the lab and with feedback from professional riders and mechanics to ensure it works great in the field and installs easily. CeramicSpeed claims the OSPW System is the fastest pulley system in the world providing an energy savings of around 1.6 watts for SRAM and 2.4 watts for Shimano over their standard pulleys. As a bonus, CeramicSpeed's testing shows that these pulleys last anywhere from 3-5 times longer than stock. This version, with coated bearings, increases durability by adding a special treatment to the bearing races that also further reduces friction.
We have models for Shimano, Campagnolo, and SRAM eTap rear derailleurs. The OSPW System for SRAM features two 17-tooth aluminum pulley wheels with the accommodating cage made from nylon and carbon fiber and can fit cassettes up to 32 teeth. For Campy riders, the system uses a 13-tooth top and a 19-tooth bottom and provides a claimed 40% reduction in friction over the standard 11-tooth Campagnolo pulley wheels. It too can fit up to a 32-tooth cassette and is compatible with all Campagnolo electronic rear derailleur (EPS) and all mechanical rear derailleurs utilizing a mounting sleeve. The OSPW System we have for Shimano is compatible with 11-speed Ultegra 8000/8050 and Dura-Ace 9100/9150 electric and mechanical groupsets except R8000 GS. It features an optimized 13/19-tooth combination developed to fit the design of the derailleur and up to a 32-tooth cassette.
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