Headset Bearing 1-3/8" for SpecializedThe CeramicSpeed Headset Bearing 1-3/8" is compatible with SpecializedThe Bearing has the following specifications:37x49x7 mm, 45/45 degreesThis product comes in two variants, with our CeramicSpeed Standard Ceramic Bearings and with our Coated Bearings. The Coated Bearings offer an even longer lifetime and lower friction. Learn more about the coated advantage.RELATED TECHNICAL INFORMATION:Compatible with Specialized. Headset specifications: 37x49x7 mm, 45/45 degrees