Shimano BB-RS501 BSA Bottom Bracket – Smooth, Durable, and Efficient Power Transfer

The Shimano BB-RS501 BSA Bottom Bracket delivers the trusted performance and reliability that Shimano is known for. Designed for Hollowtech II road cranksets, this bottom bracket ensures efficient power transfer, smooth rotation, and long-lasting durability — ideal for riders who value consistent performance in all conditions.

Performance & Features

• Precision Engineering: Designed specifically for Shimano Hollowtech II road cranksets.

• Durable Bearings: High-quality sealed bearings provide smooth rotation and excellent protection against dirt, water, and corrosion.

• BSA Threaded Design: Fits English (BSA) threaded frames, ensuring a secure, creak-free fit.

• Reliable Construction: Aluminum alloy cups for lightweight strength and excellent longevity.

• Easy Installation: Shimano’s proven design makes installation and maintenance straightforward.

Technical Specifications

SpecificationDetailModelShimano BB-RS501SeriesShimano RoadTypeHollowtech II Threaded Bottom BracketShell TypeBSA (English Threaded)Shell Width68 mm / 70 mmCrankset CompatibilityShimano Hollowtech II (24 mm spindle)MaterialAlloy cups with sealed cartridge bearingsColorBlackWeightApprox. 90 g

Why Choose the Shimano BB-RS501 BSA

• Designed for maximum power transfer and low friction.

• Compatible with a wide range of Shimano road cranksets.

• Sealed bearings for long service life and reliable performance.

• Proven Shimano Hollowtech II system for smooth pedaling efficiency.

• Ideal for training, racing, and everyday road riding.

The Shimano BB-RS501 BSA Bottom Bracket is a dependable choice for cyclists who want efficient performance, easy maintenance, and the precision that defines Shimano engineering — a perfect upgrade or replacement for your road bike setup.