BB-RS500

SHIMANO TIAGRA - Bottom Bracket - Threaded - HOLLOWTECH II - 68/70 mm shell width

The Shimano Tiagra bottom bracket uses a new seal construction for long-lasting performance.

• Outboard Bottom bracket bearing cups for use with 2-piece cap-free design
       road chainsets
• Minimal bearing interface gives superbly smooth rolling
• Easy installation
• British thread