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Are All Bottom Bracket Same Size?

Maya Lin-Takahashi • • 7 min read
Are All Bottom Bracket Same Size?
★ Key Takeaways

There Are 4 Widths Available with Bsa Bottom Brackets; 68Mm, 73Mm, 83Mm or 100Mm. This Bottom Bracket Clearly Shows You on the Outside What Bearings Have Been Fitted to the Bike. for Road Bikes, a Bsa Bottom Bracket Is Always 68 Mm Wide. Other Sizes, and Particularly the 73 Mm Width, Is Commonplace with Mountain Bikes.

Here is a detailed examination about Are All Bottom Bracket Same Size.

Direct Answer • Key Takeaway

There Are 4 Widths Available with Bsa Bottom Brackets; 68Mm, 73Mm, 83Mm or 100Mm. This Bottom Bracket Clearly Shows You on the Outside What Bearings Have Been Fitted to the Bike. for Road Bikes, a Bsa Bottom Bracket Is Always 68 Mm Wide. Other Sizes, and Particularly the 73 Mm Width, Is Commonplace with Mountain Bikes.

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Maya Lin-Takahashi
Author

Maya Lin-Takahashi

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.