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SHIMANO ULTEGRA – Bottom Bracket – Threaded – HOLLOWTECH II – 68/70 mm shell width
With reliable SHIMANO bearings and seals, the SHIMANO ULTEGRA bottom bracket has a long service life.
Key Features:
- HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency
- HollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability
- Use TLFC37 or TLFC25 in conjunction with TLFC36 adaptor tool for installation and removal
Occasionally, without notice, manufacturers change product design and/or specifications.
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