{"product_id":"ceramicspeed-oversized-ceramic-pulley-wheel-system-sram-red-etap","title":"CeramicSpeed Oversized Ceramic Pulley Wheel System - SRAM Red eTAP","description":"\u003cp\u003eCeramicSpeed’s  mission is to get mechanical friction down to zero. They’ve done bearings for  every component on your bike. Now, they’ve applied their thinking to derailleur  pulleys. That’s where the Oversized Pulley Wheel System for SRAM comes in. OSPW  is the acronym. This is for both SRAM’s eTap and Red rear derailleurs.\u003c\/p\u003e\n\u003cp\u003eJockey wheels  have gotten bigger over the years. By one tooth in most cases. Bearings have  gotten better. CS has pressed their bearings into pulleys built by others. But  that wasn’t good enough for them. Rather than accept the industry dictating the  size of derailleur pulleys, they decided to determine which size would be  ideal. They determined that seventeen-tooth pulleys would not only dramatically  reduce friction, but keep shifting performance crisp. Because such pulleys are  too big to fit in conventional pulley cages, they also had to design the cage  system, which is made of carbon reinforced polyamide. Even with the oversized  aluminum pulleys, larger bearings, and oversized cage, the total weight for the  system is only marginally higher than the stock cage and pulleys. And even with  the increases size of pulleys and the custom cage (carbon-fiber, of course),  the rear derailleur, which is designed to accommodate 11-28 cassettes\u003c\/p\u003e\n\u003cp\u003eIn terms of  aerodynamics, there is no aero penalty. In some cases, at some yaw angles and  rim depths, there is actually an aero gain. \u003c\/p\u003e\n\u003cp\u003eMore importantly,  there’s the watts savings. It’s at lest 40% over what SRAM’s own  ceramic-bearing pulleys. The larger pulleys spin at 65% of the speed of smaller  pulleys, which further helps increase durability of the system-CS bearings  already last three to five times longer than standard SRAM pulleys. And when  the day comes that you realize you’ve worn out these pulleys, CS has replacements  at the ready. \u003c\/p\u003e\n\u003cp\u003eThe heart of the  system are CeramicSpeed’s standard hybrid ceramic bearing. CeramicSpeed utilizes Grade 3  Silicon Nitride balls that possess the best possible surface finish and  roundness. In testing, the balls are 400% smoother, 128% harder, and 58%  lighter than standard steel balls found in most bike components. They’re more  than 100% smoother and 15% harder than standard ceramic balls. The balls are  installed into hardened steel races in dust-free clean rooms and then checked  again before assembly is complete. \u003c\/p\u003e\n\u003cp\u003eAs  you can imagine, installing this system is a bit more involved than replacing  pulleys. Rest-assured, it is more straightforward than it looks. You’ll need a  Philips head screwdriver and a set of Allen keys. You can perform the  installation on the bike or off, though on makes the installation a bit easier.  You’ll probably also need a few more links in your chain, so starting with a  new chain might be the easiest way to begin. Check out the linked videos to see  how its done. \u003c\/p\u003e\n\u003cp\u003eAdditional  tip: when packing the bike for plane travel, remove the rear derailleur from  your bike. This is always a good idea, but for the OSPW it goes double. The  larger pulley size means the pulleys stick out behind and under the frame more.\u003c\/p\u003e\n\u003cp\u003eThe  kit comes with the pulleys assembled on the cage, an instruction manual,  sticker sheet, and oil for lubing the bearings.\u003c\/p\u003e\n\u003cp\u003eIn  addition to there being different Red and eTap versions, there are also coated  and uncoated pulleys. Coated have less frictional resistance and last longer,  but the weight is the same. \u003c\/p\u003e\n\u003cp\u003eThe  CeramicSpeed Oversized Pulley Wheel System for SRAM eTap and Red never stops  rolling.\u003c\/p\u003e","brand":"CeramicSpeed","offers":[{"title":"Black","offer_id":43509656813612,"sku":"101649","price":449.25,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":43509656846380,"sku":"101653","price":449.25,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/33622.jpg?v=1770842917","url":"https:\/\/ricycles.com\/products\/ceramicspeed-oversized-ceramic-pulley-wheel-system-sram-red-etap","provider":"RA Cycles","version":"1.0","type":"link"}