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    All bottom brackets are not created equal. That's why Shimano bottom brackets outlast almost all others. Superior sealing, ultra-tight manufacturing tolerances and quality bearings combine to make a bottom bracket that rolls freely and never develops play.

    This replacement bottom bracket is designed specifically for Shimano hollow-tech cranks. For convenience it comes assembled and greased, all ready for installation.

    Bottom bracket cups for Shimano Tiagra FC-4700 FC-4703 Hollowtech II cranksets.

    • Tiagra Spec SM-BB-RS500
    • Actual weight 90 grams
    • Compatible with all Shimano Hollowtech II road cranks
    • Advanced sealing technology reduces friction by 50%
    • English thread 1.37
    • 68mm
    • 24mm axel
    • Made in Japan
    *Please note that our specifications may be impacted by running substitution changes, we highly recommend confirming the specifications of our products at the time of sale. *Recommended Retail Prices are subject to change without notice and may vary from store to store depending on freighting and assembly costs. Please read our Terms & Conditions

    *Giant & Liv Bicycles are available for purchase online, but due to warranty regulations, must be shipped to qualified Giant dealers, as bicycles must be assembled by a qualified bike mechanic in an approved store - This is an international policy and usually will require an additional fee to build the bike. This will be confirmed by one of our online staff after purchase of the bike.

    *Specialized Bicycles are available for home delivery nation wide.

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