Description

The Shimano SM-BBR60 is a lightweight, external threaded bottom bracket for use with Shimano Hollowtech II 24 mm spindle cranksets, primarily designed for road bikes and compatible grave/cyclocross models.

Key Specifications

• Type: External threaded (ITA/Italian)

• Shell width: 70 mm (ITA/Italian)

• Shell diameter: BSA

• Crank spindle compatibility: 24 mm Hollowtech II

• Weight: Approx. 77g

• Compatible groupsets: Shimano Ultegra (R8000/6800), 105 (R7000/5800), GRX (RX810/RX600), Dura-Ace (9000), Metrea (U5000), FC-CX70, Tiagra (4700), and other Shimano Hollowtech II road cranks

• Bearings: High-quality, small ball steel bearings with advanced sealing for low friction and high durability

• Notable tech: Lighter and smaller cup size than previous models (replaces SM-BB6700), requires the TL-FC25 adapter or compatible tool for installation

Features

• Improved sealing and smaller diameter cups, reducing friction by up to 50% compared to its predecessor

• External ball bearings for better weight distribution and more pedaling stability

• Race-proven durability and long-lasting performance with easier maintenance

• Compatible with many modern road, cyclocross, and gravel frames with ITA threaded shells

This bottom bracket is an excellent choice for upgrading or maintaining Shimano Hollowtech II road systems, balancing light weight with smooth and durable running.