Shimano RS-501 Threaded Bottom Bracket

Shimano BB-RS501 HOLLOWTECH II Bottom Bracket

The Shimano BB-RS501 is a threaded HOLLOWTECH II bottom bracket engineered to deliver smooth pedalling performance, efficient power transfer, and long-lasting durability for road, gravel, fitness, and touring bikes.

Designed for Shimano HOLLOWTECH II road cranksets, the BB-RS501 features an improved sealing system that protects the bearings from water, mud, and dirt, helping to extend bearing life while maintaining low-friction performance.

Compatible with both 68 mm and 70 mm threaded bottom bracket shells, it is an excellent upgrade or replacement for Shimano Sora, Tiagra, GRX, and other compatible road cranksets.

Features

• Genuine Shimano HOLLOWTECH II threaded bottom bracket
• Improved seal construction for enhanced bearing protection
• Smooth, low-friction bearing performance
• Efficient power transfer for consistent pedalling
• Durable construction for long service life
• Easy installation and maintenance
• Suitable for road, gravel, fitness, and touring bikes

Reliable Performance

Built to Shimano's high manufacturing standards, the BB-RS501 offers dependable performance in all riding conditions. Its improved sealing system helps reduce contamination, keeping the bearings running smoothly and efficiently over thousands of kilometres.

Specifications

Compatible Groupsets

• Shimano Sora R3000
• Shimano Tiagra 4700
• Shimano GRX RX600
• Shimano RS-Series Cranksets
• Other Shimano HOLLOWTECH II Road Cranksets