6704 Ceramic Ball Bearing 20x27x4mm Ceramic Bearing by World Champs ACER Racing

Description

World Champion ACER Racing 20x27x4mm Ceramic Ball Bearing.  This is a 20mm inner x 27mm outer ceramic ball bearing also known as a size 6704 ball bearing. Diamond polished Silicon Nitride (Si3N4) Balls, HSR cage technology and sealed on both sides.  Lubricated with lightweight and 100% synthetic ACER Racing lubricant for super fast and super smooth action. Many high performance uses including the Traxxas 5182 Summit Differential bearing.