The ROTOR BSA30 steel bracket cups are designed for a bracket with a 30 mm axle on a BSA frame (with English threading).
This item has a 7075-T6 aluminium body with thermal treatment, making it light and long-lasting. The product benefits from the ceramic ball bearings, which have a very low ratio of friction and guarantee excellent fluidity. Something you'll appreciate as soon as your feet touch the pedals. What's more, the power transfer is excellent and the cups last longer. There are also silicone seals for airtight properties.
Top quality performance!
Axis Type : Thru-Axle
Axle Diameter : 30 mm
Bearing material : Ceramic
Bottom Bracket Type : BSC British (68 mm)