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The CEMA Nabenlager 6801 12 x 21 x 5 is a high-quality hub bearing designed to keep your wheels running smoothly and efficiently. Built around the proven 6801 bearing standard, it is suitable for many modern front and rear hubs that use this compact size. With its 12 mm inner diameter, 21 mm outer diameter and 5 mm width, this bearing is ideal for lightweight wheel builds where low friction and precise running are essential, whether you ride road, gravel, MTB or city bikes.
CEMA is known for producing durable, low-resistance bearings that stand up to everyday riding as well as demanding conditions. Replacing worn hub bearings with a fresh CEMA 6801 unit can noticeably improve wheel spin, reduce play and help extend the life of your hub. The bearing is typically sealed to keep out dirt and moisture, making it a reliable choice for riders who want long service intervals and consistent performance. It is a practical upgrade or service part for home mechanics and professional workshops alike.
