- Size: American
- R12 Sealed bearings
- 100% CNC 6061-T6 alloy cones
- Include spacers for custom fit
- Weight: 5.5 oz.
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The Rant Bang Ur BB kit includes 2 precision R12 sealed bearings, 2 CNC machined 6061 aluminum cone spacers for a clean look, an aluminum internal spacer, 4 steel crank arm spacers for dialing in your chain alignment.