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What Size Are My Bicycle Wheel Bearings?

Alexander Ross • • 6 min read
What Size Are My Bicycle Wheel Bearings?
★ Key Takeaways

Best Measured with a (Vernier) Caliper. 3.969 Mm (5/32″) – Steerer (Fork) Bearings and Many Pedals. 4.762 Mm (3/16″) – Front Wheel Hubs (2 Times 10 Balls – I. E. 10 Balls at Each Side Most Often). 6.35 Mm (1/4″) – Rear Wheel Hubs (Usually 2 Times 9 Balls) and Cup and Cone Bottom Brackets (2 Times 11).

What should you know about What Size Are My Bicycle Wheel Bearings? Explore the insights in this feature article.

Direct Answer • Key Takeaway

Best Measured with a (Vernier) Caliper. 3.969 Mm (5/32″) – Steerer (Fork) Bearings and Many Pedals. 4.762 Mm (3/16″) – Front Wheel Hubs (2 Times 10 Balls – I. E. 10 Balls at Each Side Most Often). 6.35 Mm (1/4″) – Rear Wheel Hubs (Usually 2 Times 9 Balls) and Cup and Cone Bottom Brackets (2 Times 11).

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Alexander Ross
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Alexander Ross

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.