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RC Car & Truck Econo bearing 50 packs are the most affordable way to replace stock bearings with high quality standard bearings. This pack contains 50 pieces of an MF84-ZZC PS2 which has an inside diameter of 4 mm, and outside diameter of 8 mm and a width of 3 mm. Boca's Econo RC Bearings have long been the industry standard for backyard bashers the world over. These bearings have chrome steel races, balls,retainers and shields. All Econo bearings are packed in grease and will require a short break in period to loosen up. (4x8x3)
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