The CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low-friction bearings and unique overall design.Features a 14-tooth upper pulley wheel and a 18-tooth lower pulley wheel to provide absolute optimization of the rear derailleur. The narrow wide tooth profile ensures durable chain retention. Robust cage is crafted from carbon reinforced polyamide for durability and light weight. Three spring tension settings allow you to customize performance and reduce chain drag. Offers up to 40% efficiency savings, compared to the stock Eagle cage. Fits 10-50 tooth cassette range. Coated bearing races increase bearing service life by increasing hardness of race and reducing corrosion. Only compatible with.
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