Enhance your bike's performance with the MR137 Bicycle Headset Bearing, a premium component designed for precision, durability, and smooth operation. Featuring exact dimensions of 37x46.9x7mm with 45°x45° chamfer angles, this bearing ensures a perfect fit and precise alignment in a variety of bicycle headsets. Crafted from high-grade steel and sealed for protection, the MR137 bearing offers excellent resistance to rust, corrosion, and debris, making it ideal for all-weather cycling. Its smooth operation reduces friction, providing a quieter and more efficient ride while extending the life of your bike's components. Whether you're replacing an old bearing or upgrading your bike, the MR137 is designed for straightforward installation, making it an essential choice for cyclists who prioritize performance, reliability, and ease of maintenance. Specifications: Dimensions: 37x46.9x7mm for accurate fitting Chamfer Angles: 45° inner chamfer and 45° outer chamfer for precise alignment Compatibility: Suitable for various bicycle headset models