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it turns more slowly and there is less friction
Black = 0 degree
and fast accelerating for the climbs
Manganese Rail - Light and flexible at the same time
KOGEL BEARINGS BOTTOM BRACKET PF30 | CROSS SEALS CERAMIC 30 MM SPINDLE chains it turns more slowly andKOGEL BEARINGS bottom bracket PF30 Cross Seals ceramic 30 mm shaftThe people at Kogel Bearings believe that high quality ceramic bearings are the measure of things for ball bearings in bicycles. Silicon nitride has a number of material properties that make it almost perfect for bicycle storage. The material is extremely hard, wear resistant, can be formed into perfectly round balls with minimal tolerances and can be polished smoother than any metal.
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