Shimano ULTEGRA SM-BBR60 BSA Hollowtech II Bottom Bracket (68mm)\n\nUpgrade your drivetrain's efficiency with the Shimano SM-BBR60 Bottom Bracket. Specifically engineered for frames with a 68mm BSA (English) threaded bottom bracket shell, this component is highly recommended for use with Shimano Ultegra, 105, GRX, and other Hollowtech II 24mm axle cranksets.\nThe SM-BBR60 convinces with improved smooth running and a noticeable reduction in weight, while remaining just as durable and long-lasting as its predecessor. Whether you are building a new bike or replacing a worn-out bearing, this bottom bracket ensures maximum power transfer and rotational smoothness.\n\nRetail Packaging: This item is brand new .\n\nKey Features\n\n--Hollowtech II Technology: Designed to perfectly integrate with 24mm crank axles for optimum stiffness, weight savings, and rotational performance.\n--Versatile Discipline Use: Highly suitable for Road, Gravel, Cyclocross (CX), and City Bike builds.\n--Reduced Fri.