Bearing BlackBearing B5 6805 25x37x7mm

The BlackBearing B5 range is a high quality bearing upgrade to perform in the most extreme circumstances.

– for bottom bracket
– Chrome steel balls SAE52100 abec 5
– Steel rings SAE52100 with optmized internal design
– Chrome steel cage
– Reinforced 2RS seals for better water and dust resistance.
– High quality grease