CeramicSpeed 177 Freehub Lowest resistance hybrid ceramic (ceramic balls and steel cages) available. Measurable wattage savings between 1.5 and 9 watts per bearing set, depending on the level and condition of your existing bearings. Kits include Freehub body with CeramicSpeed bearings pre-installed for easy installation onto the wheel. SRAM Model ID: HU-SPP-A0. Item Specifications: Cassette Body Type, HG 11, Freehub Compatibility, 177, Drivetrain Speeds, 11,.
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