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The Enduro Bottom Bracket Bearing CH MRA 2437 LLB is a high-quality, durable bearing designed for use in Shimano external-cup bottom brackets with a 24mm OD spindle cranksets. Featuring ABEC-5 Ceramic-Hybrid Angular-Contact design, this bearing includes grade 5 Silicon-Nitride Ceramic balls with 90% fill and high-pressure, water-proof grease for long-lasting performance. By reducing bearing wear and increasing lifespan, this bearing is ideal for applications with constantly changing lateral loads, such as bottom brackets, to minimize friction, wear, and premature failure. Upgrade your bottom bracket with the Enduro CH MRA 2437 LLB for reliable performance on every ride.