BSA comes from Birmingham Small Arms, aka English threading. English threading on mountain bikes means a 73mm wide, 34mm inside diameter shell with reverse threading on the drive side. It’s the most common threaded standard employed today. This kit allows you to fit 30mm thru-axle cranks, like those from Rotor or RaceFace, to fit in the tight space of this 30mm spindle.
Features:
- Grade 3 Silicon Nitride balls
- Coated races increase bearing service life by increasing hardness of race and reducing corrosion
- Reinforced polyamide cage and non-contact seals
- Hand built in Denmark
- CeramicSpeed products with coated bearings include a 6-year warrantyÂ













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