Mortop BB

Mortop BB

* Material:CNC Durable Forged Alumium cups.
* Shell: 68mm or 73mm
* Cups:sealed bearings(BC-1.37"thread)/1*Alloy steel with 2*O-rings/3*2.5mm spacer.

*weight:seal bearing---75grams(without 3 pc spacer)
*weight:ceramic bearing---72grams(without 3 pc spacer)

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