cycling face masks for cold weather-Shimano BB-RS501 Hollowtech II Italian Bottom Bracket

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Shimano BB-RS501 Hollowtech II Italian Bottom Bracket. 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
    • TECH SPECS
    Bottom Bracket Shell I.D. 36
    BB/Frame Interface Italian
    BB Shell Width (mm) 70
    Weight 93
    Spindle Interface Type Shimano Hollowtech II
    Defined Color Silver
    keyword search RS-500