The derailleur wheels from the Danish company CeramicSpeed ??represent the absolute high-end solution for all racers who place the highest value on least friction with the best power transmission. Derailleur gears and their bearings in particular must compensate for a great deal of friction. These rotate 4 to 5 times faster than the crank, depending on the gear ratio, and thus benefit particularly from low-friction and durable bearing . Their outstanding ease of running eliminates the need to pull the chain over the derailleur rollers.
CeramicSpeed ??uses only the best materials and the latest technologies to produce the highest quality possible. All products are handmade in Denmark. During assembly, no hydraulic presses are used. Manual assembly eliminates manufacturing tolerances and guarantees a 100% fit. So you really only the best on your bike bums!
intended use : Road Material: aluminum, ceramic Grade 3 Compatibility: SRAM 11-speed Number of teeth: 11 Bearings: Type 607 Coated Color gold