Shimano Ultegra SM-BBR60 bottom bracket

Cranks and bottom brackets have a decisive influence on the overall functional performance of a bicycle. Smooth operation, good power transmission, and high durability are essential factors when choosing a crankset. Shimano manufactures a large range of different cranksets and matching bottom brackets. This ensures that an optimally suitable system is available for every bicycle and every discipline.

Hollowtech II works with 24 mm axles and bearings. After analyzing all factors and conducting tests, we decided on axles and bearings with a 24 mm diameter. This offers the greatest possible balance of rotational efficiency, stiffness, durability, sealing, and weight in proven Shimano quality.

Features:

• Color: Black
• Material: Aluminum
• Thread: BSA or ITA
• Shell width: 68 mm (BSA) or 70 mm (ITA)
• Weight: 77 g
• 14 g lighter than SM-BB6700 while just as durable as its predecessor
• Runs more smoothly than SM-BB6700 (50% less friction)
• Compatible with Dura Ace: FC-9000, Ultegra: FC-6800, Others: FC-CX70