The Shimano BB-RS501 bottom bracket features an enhanced seal construction to provide long-lasting performance and service life.

• Designed for a perfect fit with Hollowtech II 24mm crank spindles
• Anodized aluminum cups are high strength and light weight
• BB Shell Width (mm): 70
• BB/Frame Interface: Italian
• Bottom Bracket Shell I.D.: 36
• Defined Color: Silver
• Spindle Interface Type: Shimano Hollowtech II
• Weight: 93
• keyword search: RS-500