Enduro Bearings presents the 61803 LLU/LLB C3 - ABEC 5, a top-quality radial bearing perfect for bicycle applications. This bearing features 52100 High-Carbon Chromium alloy races paired with grade 5 balls with a 90% fill, ensuring optimal performance. The bearing is lubricated with high-pressure, water-proof grease for long-lasting durability.The LLU/LLB seal combination on this bearing is designed to provide maximum protection against contamination from water or dirt. The more protective LLU seal faces outward, towards the elements, while the lighter-contact LLB seals face inward, keeping the grease securely in place without causing excessive drag.Enduro Bearings offers a wide range of options to suit different needs. Our bearings are available in High-Carbon Chromium Steel, 440C Stainless Steel, Ceramic-Hybrid, and XD-15 with Ceramic or Stainless Balls. All our bearings are engineered with deep groove races to accommodate larger balls, ensuring superior performance.Our standard bearings feature dual-lip seals that ride in a micro groove, creating a full labyrinth to provide ultimate protection against the elements. This makes them perfect for bottom brackets, ensuring smooth and reliable performance. Bearing Code: MR 2437Dimensions: 24mm x 37mm x 7mmABEC: 5Grade: 5Seals: LLU/LLBGrease: Kyodo Yushi PS-2Application: Bottom BracketsChoose Enduro Bearings for top-quality bearings that deliver exceptional performance and durability.