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Stainless Steel Ball Bearings 1/4" – Pack of 20 (PN: 01-4675)
Upgrade the steering head bearings on your classic British motorcycle with these premium Grade 100 hardened AISI 420 stainless steel ball bearings. Precision-manufactured to exacting standards, they offer far superior corrosion resistance and durability compared with the original mild-steel balls.
Each 1/4" (6.35 mm) bearing is polished, perfectly round, and rated Grade 100 for minimal run-out and smooth, long-lasting performance.
Key Features:
- Part Number: 01-4675
- Diameter: 1/4" (6.350 mm ±0.0001")
- Material: Hardened AISI 420 stainless steel
- Grade: 100 (precision)
- Quantity per pack: 20 bearings (enough for one complete top OR bottom head race)
- Note: Two packs (40 balls) required for a full head race rebuild.
Motorcycle Compatibility: Direct replacement for the original loose 1/4" ball bearings fitted to a wide range of BSA models with telescopic forks including:
A7, A10, A50 (OIF), A65 (OIF), B31, B33, M-group models and DBD34 Gold Star. May also suit other British motorcycles using 1/4" head race bearings — please confirm with your parts book.
General / Industrial Use: These high-precision Grade 100 AISI 420 stainless balls are suitable for countless other applications including:
- drawer runners and cabinet slides
- casters and trolleys
- turntables and lazy Susans
- precision instruments
- model engineering
- fishing reels
- vintage pedal cars and prams
- any application requiring 1/4" (6.35 mm) hardened stainless steel balls
01-4675 - Ball bearings 1/4"
- Product Code: 01-4675 - (20 Pack)
- Availability: In Stock
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£6.00
- Ex Tax: £5.00
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66-4149 - Head Race Kit
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£60.00 Ex Tax: £50.00
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