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Shimano Hollowtech II Threaded Bottom Bracket SM-BB93 – 68/73 mm (BSA)
Designed for durability and smooth performance, the Shimano SM-BB93 XTR series bottom bracket features improved sealing compared to road models such as the BB-R9100 (Dura-Ace), SM-BBR60 (Ultegra) and BB-RS500 (105/Tiagra). Its robust construction helps keep dirt and moisture out, ensuring long-lasting performance in all riding conditions.
Features
Genuine Shimano Hollowtech II bottom bracket assembly
Includes left and right cups, spacers, inner sleeve, and O-rings
Enhanced sealing for superior protection against water and debris
Lightweight seal structure helps reduce unnecessary grams
Sealed bearing design for smooth, low-maintenance performance
Maintenance-free operation
Compatible with Road, Gravel, and Mountain bikes using 24 mm Hollowtech II crank spindles
Fits 68 mm and 73 mm BSA threaded bottom bracket shells
Durable black anodized finish
Simple installation and removal
Installation
Use Shimano TL-FC34 or TL-FC24 bottom bracket tools in conjunction with the TL-FC36 adapter.
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Review Shimano Hollowtech II Threaded Bottom Bracket SM-BB93 -68/73 (BSA)