BLACK BEARING B5 ABEC 5 63805-2RS Łożysko kulkowe 25x37x10mm

The BLACK BEARING B5 63805-2RS (single row) frame / wheel / bottom bracket bearing is a high-quality replacement bearing that is ideal for use in the most extreme conditions.

These bearings are characterised by optimum reliability, exceptional fluidity and very high durability and consist of chrome steel balls, a cage also made of chrome steel and reinforced 2RS seals that ensure excellent water and dust resistance.