The Black Bearing B3 (30x40x7) bearing is specifically designed for the demanding requirements of cycling. Perfect for replacing your original bottom bracket bearings (specifically SRAM / Truvativ DUB standards), it ensures long-lasting smoothness and 100% compatibility.
Specifications
- Dimensions: 30 mm (ID) x 40 mm (OD) x 7 mm (Width)
- Material: High-precision SAE52100 chrome steel balls and rings
- Sealing: "2RS" double-lip seals, water and dust resistant
- Lubrication: Superior quality grease for extended service life
- Usage: Ideal for OEM replacement or standard maintenance
Sold individually
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